tauri-runtime-cef-v3.0.0-alpha.6
tauri-apps/tauritauri-runtime-cef-v3.0.0-alpha.6Oct 14, 2026by github-actions[bot]
Upgrading?
AI Summary
The CEF runtime alpha release for Tauri v3.0.0-alpha.6, adding windowless browser support and fixing integration issues.
Key Highlights
- Added support for windowless CEF browsers with custom render/input handlers
- Fixed CEF child processes ignoring API version
- Fixed app reopening hidden windows after crash or kill
- Fixed overlay titlebars intercepting mouse events on macOS
- Bumped CEF to 154.5.0
New Features
- Windowless CEF browser support with custom render/input handlers
Full Release Notes
<details>
<summary><em><h4>Cargo Audit</h4></em></summary>
```
Fetching advisory database from `https://github.com/RustSec/advisory-db.git`
Loaded 1329 security advisories (from /home/runner/.cargo/advisory-db)
Updating crates.io index
Scanning Cargo.lock for vulnerabilities (1154 crate dependencies)
Crate: fxhash
Version: 0.2.1
Warning: unmaintained
Title: fxhash - no longer maintained
Date: 2025-09-05
ID: RUSTSEC-2025-0057
URL: https://rustsec.org/advisories/RUSTSEC-2025-0057
Crate: paste
Version: 1.0.15
Warning: unmaintained
Title: paste - no longer maintained
Date: 2024-10-07
ID: RUSTSEC-2024-0436
URL: https://rustsec.org/advisories/RUSTSEC-2024-0436
Crate: rustybuzz
Version: 0.20.1
Warning: unmaintained
Title: `rustybuzz` is unmaintained
Date: 2026-07-11
ID: RUSTSEC-2026-0206
URL: https://rustsec.org/advisories/RUSTSEC-2026-0206
Crate: ttf-parser
Version: 0.25.1
Warning: unmaintained
Title: `ttf-parser` is unmaintained
Date: 2026-06-28
ID: RUSTSEC-2026-0192
URL: https://rustsec.org/advisories/RUSTSEC-2026-0192
Crate: num-modular
Version: 0.6.6
Warning: yanked
warning: 5 allowed warnings found
```
</details>
## [3.0.0-alpha.6]
### New Features
- [`a7b81d993`](https://www.github.com/tauri-apps/tauri/commit/a7b81d993da706e5c94b64cecb91815b517627b3) ([#16225](https://www.github.com/tauri-apps/tauri/pull/16225) by [@mayocream](https://www.github.com/tauri-apps/tauri/../../mayocream)) Allow CEF windowless browsers with an application-provided render handler and native window event callback. Applications provide painting, input, IME, cursor handling and composition.
### Bug Fixes
- [`d78cc6085`](https://www.github.com/tauri-apps/tauri/commit/d78cc6085b9ab8a036d4e6430d1f20e9c0cf1889) ([#16241](https://www.github.com/tauri-apps/tauri/pull/16241) by [@beanow-at-crabnebula](https://www.github.com/tauri-apps/tauri/../../beanow-at-crabnebula)) Fixed CEF child processes ignoring `Cef::cef_api_version`. Renderer, GPU and utility processes now declare the same CEF API version as the browser process, which passes it on each child's command line as `--tauri-cef-api-version=<n>`.
- [`6a2cb9688`](https://www.github.com/tauri-apps/tauri/commit/6a2cb9688b7d28daf7c76b9beffc872477164a72) Fixed the app reopening hidden copies of its previous run's windows, which kept the process alive after every app window was closed. After a crash or a kill, Chromium's session restore reopened the last session's tabs in Chrome browser windows the runtime does not own. The runtime now sets the `session.restore_on_startup` profile preference to open the New Tab page, which restores nothing. `Cef::profile_preference_value` can still override it.
- [`c6b974b8a`](https://www.github.com/tauri-apps/tauri/commit/c6b974b8acd0083b35dce37a2d3792ed95cb85c6) ([#16275](https://www.github.com/tauri-apps/tauri/pull/16275) by [@github-actions](https://www.github.com/tauri-apps/tauri/../../github-actions)) Fix overlay titlebars intercepting webview mouse events on macOS.
- [`a5e3a697e`](https://www.github.com/tauri-apps/tauri/commit/a5e3a697e48f50273982dca658e90402cd977a9f) ([#16240](https://www.github.com/tauri-apps/tauri/pull/16240) by [@beanow-at-crabnebula](https://www.github.com/tauri-apps/tauri/../../beanow-at-crabnebula)) Report an unsupported CEF API version instead of crashing. The runtime now checks the result of `cef_api_hash`: the browser process logs the version and fails with `Error::WebviewRuntimeNotInstalled`, and a helper process panics with the same message.
### Dependencies
- Upgraded to `tauri-utils@3.0.0-alpha.4`
- Upgraded to `tauri-runtime@3.0.0-alpha.4`
- Upgraded to `tauri-macros@3.0.0-alpha.4`
- Upgraded to `tauri@3.0.0-alpha.5`
- [`370ea9769`](https://www.github.com/tauri-apps/tauri/commit/370ea97696ae280db894a81aea97e917f293e6db) Bump CEF to 154.5.0+154.0.34.
<details>
<summary><em><h4>Cargo Publish</h4></em></summary>
```
Updating crates.io index
Packaging tauri-runtime-cef v3.0.0-alpha.6 (/home/runner/work/tauri/tauri/crates/tauri-runtime-cef)
Updating crates.io index
Packaged 73 files, 879.9KiB (231.7KiB compressed)
Verifying tauri-runtime-cef v3.0.0-alpha.6 (/home/runner/work/tauri/tauri/crates/tauri-runtime-cef)
Downloading crates ...
Downloaded calloop v0.14.5
Downloaded dlib v0.5.3
Downloaded cairo-sys-rs v0.22.9
Downloaded cairo-rs v0.22.9
Downloaded html5ever v0.29.1
Downloaded system-deps v9.0.0
Downloaded as-raw-xcb-connection v1.0.1
Downloaded dispatch2 v0.3.1
Downloaded document-features v0.2.12
Downloaded cargo-platform v0.3.3
Downloaded cfg-expr v0.20.10
Downloaded derive_more v0.99.20
Downloaded dirs v6.0.0
Downloaded fxhash v0.2.1
Downloaded gdk4 v0.11.5
Downloaded unit-prefix v0.5.2
Downloaded wayland-client v0.31.15
Downloaded utf-8 v0.7.6
Downloaded block2 v0.6.2
Downloaded wayland-protocols v0.32.13
Downloaded wayland-sys v0.31.11
Downloaded cursor-icon v1.2.0
Downloaded downcast-rs v1.2.1
Downloaded convert_case v0.4.0
Downloaded gdk4-sys v0.11.5
Downloaded xkbcommon-dl v0.4.2
Downloaded gdk-pixbuf v0.22.0
Downloaded download-cef v3.0.0
Downloaded futf v0.1.5
Downloaded gdk-pixbuf-sys v0.22.9
Downloaded wayland-scanner v0.31.11
Downloaded rand_pcg v0.2.1
Downloaded cssparser v0.29.6
Downloaded cssparser-macros v0.6.1
Downloaded gio-sys v0.22.9
Downloaded winit-core v0.31.0-beta.3
Downloaded libloading v0.8.9
Downloaded wayland-backend v0.3.17
Downloaded phf_generator v0.8.0
Downloaded gdk4-x11-sys v0.11.5
Downloaded phf v0.10.1
Downloaded xkeysym v0.2.1
Downloaded kuchikiki v0.8.8-speedreader
Downloaded cookie_store v0.22.1
Downloaded dioxus-debug-cell v0.1.1
Downloaded gdk4-x11 v0.11.5
Downloaded gobject-sys v0.22.9
Downloaded gtk4-macros v0.11.5
Downloaded gdk4-wayland v0.11.5
Downloaded graphene-sys v0.22.9
Downloaded xcursor v0.3.11
Downloaded console v0.16.6
Downloaded phf_shared v0.8.0
Downloaded x11rb v0.13.2
Downloaded x11rb-protocol v0.13.2
Downloaded gtk4-sys v0.11.5
Downloaded selectors v0.24.0
Downloaded string_cache_codegen v0.5.4
Downloaded tauri-winit-x11 v0.31.0-beta.3
Downloaded pango v0.22.9
Downloaded phf v0.8.0
Downloaded phf_generator v0.11.3
Downloaded proc-macro-hack v0.5.20+deprecated
Downloaded glib-macros v0.22.9
Downloaded objc2-encode v4.1.0
Downloaded quick-xml v0.41.0
Downloaded glib v0.22.10
Downloaded gsk4-sys v0.11.5
Downloaded litrs v1.0.0
Downloaded markup5ever v0.14.1
Downloaded match_token v0.1.0
Downloaded matches v0.1.10
Downloaded nodrop v0.1.14
Downloaded phf_codegen v0.8.0
Downloaded phf_shared v0.10.0
Downloaded phf_shared v0.11.3
Downloaded proc-macro-crate v3.5.0
Downloaded servo_arc v0.2.0
Downloaded tauri-winit-gtk4 v0.31.0-beta.3
Downloaded toml_edit v0.25.17+spec-1.1.0
Downloaded cargo_metadata v0.23.1
Downloaded indicatif v0.18.6
Downloaded gethostname v1.1.0
Downloaded mac v0.1.1
Downloaded rand v0.7.3
Downloaded gsk4 v0.11.5
Downloaded scoped-tls v1.0.1
Downloaded gio v0.22.10
Downloaded graphene-rs v0.22.8
Downloaded phf_generator v0.10.0
Downloaded objc2-foundation v0.3.2
Downloaded objc2-core-foundation v0.3.2
Downloaded polling v3.11.0
Downloaded rand_core v0.5.1
Downloaded siphasher v0.3.11
Downloaded getrandom v0.1.16
Downloaded pango-sys v0.22.9
Downloaded phf_macros v0.10.0
Downloaded string_cache v0.8.9
Downloaded tendril v0.4.3
Downloaded gtk4 v0.11.5
Downloaded glib-sys v0.22.9
Downloaded tauri-winit v0.31.0-beta.3
Downloaded gdk4-wayland-sys v0.11.5
Downloaded phf_codegen v0.11.3
Downloaded objc2 v0.6.5
Downloaded phf v0.11.3
Downloaded rand_chacha v0.2.2
Downloaded unicode-width v0.2.2
Downloaded cef-dll-sys v154.5.0+154.0.34
Downloaded target-lexicon v0.13.5
Downloaded portable-atomic v1.15.0
Downloaded cef v154.5.0+154.0.34
Downloaded winit-common v0.31.0-beta.3
Compiling serde_core v1.0.229
Compiling winnow v1.0.4
Compiling toml_datetime v1.1.2+spec-1.1.0
Compiling target-lexicon v0.13.5
Compiling system-deps v9.0.0
Compiling yoke v0.8.3
Compiling zerovec v0.11.8
Compiling cfg-expr v0.20.10
Compiling tinystr v0.8.4
Compiling toml_parser v1.1.5+spec-1.1.0
Compiling icu_locale_core v2.3.0
Compiling zerotrie v0.2.5
Compiling potential_utf v0.1.6
Compiling toml v1.1.8+spec-1.1.0
Compiling icu_collections v2.3.0
Compiling icu_provider v2.3.1
Compiling serde v1.0.229
Compiling bitflags v2.13.2
Compiling getrandom v0.2.17
Compiling zerocopy v0.8.62
Compiling icu_properties v2.3.0
Compiling semver v1.0.28
Compiling glib-sys v0.22.9
Compiling gobject-sys v0.22.9
Compiling gio-sys v0.22.9
Compiling rand_core v0.6.4
Compiling siphasher v0.3.11
Compiling gdk-pixbuf-sys v0.22.9
Compiling cairo-sys-rs v0.22.9
Compiling pango-sys v0.22.9
Compiling darling_core v0.24.1
Compiling glib-macros v0.22.9
Compiling getrandom v0.1.16
Compiling rustc_version v0.4.1
Compiling gdk4-sys v0.11.5
Compiling icu_normalizer v2.3.0
Compiling ppv-lite86 v0.2.21
Compiling idna_adapter v1.2.2
Compiling rand_chacha v0.3.1
Compiling rand v0.8.8
Compiling bytes v1.12.1
Compiling darling_macro v0.24.1
Compiling glib v0.22.10
Compiling darling v0.24.1
Compiling phf_shared v0.11.3
Compiling rustix v1.1.5
Compiling serde_with_macros v3.24.0
Compiling rand_core v0.5.1
Compiling string_cache v0.9.0
Compiling idna v1.1.0
Compiling libloading v0.8.9
Compiling syn v1.0.109
Compiling linux-raw-sys v0.12.1
Compiling ring v0.17.14
Compiling url v2.5.8
Compiling web_atoms v0.2.6
Compiling tendril v0.5.1
Compiling graphene-sys v0.22.9
Compiling serde_json v1.0.154
Compiling zeroize v1.9.1
Compiling markup5ever v0.39.0
Compiling rustls-pki-types v1.15.1
Compiling cssparser v0.37.0
Compiling dlib v0.5.3
Compiling rand_pcg v0.2.1
Compiling rand_chacha v0.2.2
Compiling phf_generator v0.11.3
Compiling phf_shared v0.8.0
Compiling servo_arc v0.4.3
Compiling utf8parse v0.2.2
Compiling untrusted v0.9.0
Compiling proc-macro-hack v0.5.20+deprecated
Compiling gio v0.22.10
Compiling cairo-rs v0.22.9
Compiling httparse v1.10.1
Compiling selectors v0.38.0
Compiling anstyle-parse v1.0.0
Compiling rand v0.7.3
Compiling html5ever v0.39.0
Compiling http v1.5.0
Compiling camino v1.2.6
Compiling phf_shared v0.10.0
Compiling gsk4-sys v0.11.5
Compiling anstyle v1.0.14
Compiling anstyle-query v1.1.5
Compiling portable-atomic v1.15.0
Compiling is_terminal_polyfill v1.70.2
Compiling colorchoice v1.0.5
Compiling schemars v1.2.2
Compiling anstream v1.0.0
Compiling rustls v0.23.46
Compiling cargo_metadata v0.19.2
Compiling phf_generator v0.10.0
Compiling tracing v0.1.44
Compiling dom_query v0.28.0
Compiling phf_generator v0.8.0
Compiling rustls-webpki v0.103.15
Compiling string_cache_codegen v0.5.4
Compiling phf_codegen v0.11.3
Compiling urlpattern v0.6.0
Compiling serde_with v3.24.0
Compiling fs-err v3.3.2
Compiling dpi v0.1.2
Compiling wayland-sys v0.31.11
Compiling unicode-width v0.2.2
Compiling clap_lex v1.1.1
Compiling mac v0.1.1
Compiling subtle v2.6.1
Compiling once_cell v1.21.4
Compiling futf v0.1.5
Compiling clap_builder v4.6.7
Compiling tauri-utils v3.0.0-alpha.4
Compiling console v0.16.6
Compiling tokio v1.53.2
Compiling pango v0.22.9
Compiling gdk-pixbuf v0.22.0
Compiling gdk4 v0.11.5
Compiling markup5ever v0.14.1
Compiling phf_macros v0.10.0
Compiling ureq-proto v0.6.4
Compiling xattr v1.6.1
Compiling phf_codegen v0.8.0
Compiling cssparser v0.29.6
Compiling webpki-roots v1.0.9
Compiling field-offset v0.3.6
Compiling socks v0.3.4
Compiling gtk4-sys v0.11.5
Compiling keyboard-types v0.8.3
Compiling wayland-backend v0.3.17
Compiling toml_edit v0.25.17+spec-1.1.0
Compiling clap_derive v4.6.7
Compiling filetime v0.2.29
Compiling utf8-zero v0.8.1
Compiling utf-8 v0.7.6
Compiling unit-prefix v0.5.2
Compiling libbz2-rs-sys v0.2.5
Compiling indicatif v0.18.6
Compiling bzip2 v0.6.1
Compiling tendril v0.4.3
Compiling clap v4.6.7
Compiling ureq v3.4.2
Compiling tar v0.4.46
Compiling proc-macro-crate v3.5.0
Compiling phf v0.10.1
Compiling selectors v0.24.0
Compiling string_cache v0.8.9
Compiling http-body v1.1.0
Compiling graphene-rs v0.22.8
Compiling phf v0.11.3
Compiling embed-resource v3.0.12
Compiling cssparser-macros v0.6.1
Compiling quick-xml v0.41.0
Compiling downcast-rs v1.2.1
Compiling matches v0.1.10
Compiling sha1_smol v1.0.1
Compiling scoped-tls v1.0.1
Compiling nodrop v0.1.14
Compiling convert_case v0.4.0
Compiling wayland-client v0.31.15
Compiling derive_more v0.99.20
Compiling wayland-scanner v0.31.11
Compiling servo_arc v0.2.0
Compiling gsk4 v0.11.5
Compiling download-cef v3.0.0
Compiling tauri-winres v0.3.6
Compiling gtk4-macros v0.11.5
Compiling phf v0.8.0
Compiling fxhash v0.2.1
Compiling cargo_toml v1.0.1
Compiling gdk4-x11-sys v0.11.5
Compiling gdk4-wayland-sys v0.11.5
Compiling cmake v0.1.58
Compiling uuid v1.28.0
Compiling match_token v0.1.0
Compiling xkeysym v0.2.1
Compiling cursor-icon v1.2.0
Compiling smol_str v0.3.6
Compiling winit-core v0.31.0-beta.3
Compiling html5ever v0.29.1
Compiling xkbcommon-dl v0.4.2
Compiling tauri-build v3.0.0-alpha.4
Compiling cfb v0.14.0
Compiling cef-dll-sys v154.5.0+154.0.34
Compiling gtk4 v0.11.5
Compiling jsonptr v0.7.1
Compiling polling v3.11.0
Compiling gethostname v1.1.0
Compiling erased-serde v0.4.10
Compiling serde_spanned v1.1.2
Compiling as-raw-xcb-connection v1.0.1
Compiling xcursor v0.3.11
Compiling x11rb-protocol v0.13.2
Compiling hyper v1.12.0
Compiling wayland-protocols v0.32.13
Compiling tower v0.5.3
Compiling serde-untagged v0.1.9
Compiling calloop v0.14.5
Compiling kuchikiki v0.8.8-speedreader
Compiling json-patch v4.2.0
Compiling ico v0.5.0
Compiling tauri v3.0.0-alpha.5
Compiling infer v0.22.0
Compiling winit-common v0.31.0-beta.3
Compiling plist v1.10.1
Compiling png v0.18.1
Compiling x11rb v0.13.2
Compiling bytemuck v1.25.2
Compiling muda v0.20.0
Compiling cfg_aliases v0.2.2
Compiling tauri-winit v0.31.0-beta.3
Compiling tokio-util v0.7.20
Compiling tauri-winit-x11 v0.31.0-beta.3
Compiling hyper-util v0.1.21
Compiling tauri-codegen v3.0.0-alpha.4
Compiling gdk4-wayland v0.11.5
Compiling gdk4-x11 v0.11.5
Compiling tower-http v0.6.11
Compiling http-body-util v0.1.5
Compiling cargo-platform v0.3.3
Compiling serialize-to-javascript v0.1.2
Compiling cargo_metadata v0.23.1
Compiling tauri-runtime v3.0.0-alpha.4
Compiling tauri-winit-gtk4 v0.31.0-beta.3
Compiling reqwest v0.13.5
Compiling tauri-macros v3.0.0-alpha.4
Compiling tauri-runtime-cef v3.0.0-alpha.6 (/home/runner/work/tauri/tauri/target/package/tauri-runtime-cef-3.0.0-alpha.6)
Compiling dirs v6.0.0
Compiling dioxus-debug-cell v0.1.1
Compiling cef v154.5.0+154.0.34
Finished `dev` profile [unoptimized + debuginfo] target(s) in 3m 01s
Uploading tauri-runtime-cef v3.0.0-alpha.6 (/home/runner/work/tauri/tauri/crates/tauri-runtime-cef)
Uploaded tauri-runtime-cef v3.0.0-alpha.6 to registry `crates-io`
note: waiting for tauri-runtime-cef v3.0.0-alpha.6 to be available at registry `crates-io`
help: you may press ctrl-c to skip waiting; the crate should be available shortly
Published tauri-runtime-cef v3.0.0-alpha.6 at registry `crates-io`
```
</details>
Related Repositories
farion1231/cc-switch★ 147,222
A cross-platform desktop All-in-One assistant for Claude Code, Codex, OpenCode, OpenClaw, Grok Build & Hermes Agent. Only official website: ccswitch.io
rustdesk/rustdesk★ 126,546
An open-source remote desktop application designed for self-hosting, as an alternative to TeamViewer.
ruvnet/RuView★ 99,051
π RuView turns commodity WiFi signals into real-time spatial intelligence, vital sign monitoring, and presence detection — all without a single pixel of video.
oven-sh/bun★ 96,338
Incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one
zed-industries/zed★ 92,012
Code at the speed of thought – Zed is a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.