| 1971465 |
performance bug using video chat sites |
UNCONFIRMED |
| 1971470 |
Pasting text on https://mbbill.github.io/JSC.js/demo/index.html is 3.5x slower in Firefox compared to Chrome |
NEW |
| 1971505 |
JS-compiler demo at http://sweetjs.org/browser/editor.html is 3x slower in Nightly compared to Chrome |
NEW |
| 1971523 |
Modified Codepen demo (https://codepen.io/carterfromsl/pen/YPXrVoL) is faster in Chrome |
NEW |
| 1971612 |
JetStream3: dart-flute performance |
NEW |
| 1971650 |
WebGPU: error reporting for mismatched pass begin/end does not match spec |
NEW |
| 1971652 |
WebGPU: behavior when attempting to record a command on a finished pass does not match spec |
NEW |
| 1971671 |
`Instance::GetPreferredCanvasFormat` and `wgpu_bindings::server` don't agree on preferred canvas format |
ASSIGNED |
| 1971677 |
[WebGPU] Demo at https://codepen.io/cjgammon/pen/xbGYdbQ does not work on Nightly, works on Chrome |
NEW |
| 1971679 |
[WebGPU] Continuous increase in gpu-process memory on https://codepen.io/Phil_Crowther/pen/WNYpQEd |
NEW |
| 1971716 |
Demo at https://codepen.io/Nayab-Rani/pen/vYoxooG uses 100% CPU on Firefox, and 15% on Chrome |
NEW |
| 1971823 |
Testcase generating N CSS class selectors is 2x slower in Firefox. |
REOPENED |
| 1971860 |
Spidermonkey is slower on WASM GC binary-trees |
NEW |
| 1971862 |
Spidermonkey is slower on JS binary-trees |
NEW |
| 1971874 |
ChatGPT web page unresponsive after React TypeError: Performance.mark: Expected startTime >= 0 |
NEW |
| 1971883 |
WebGPU content process should not be trusted to choose canvas texture format |
NEW |
| 1971884 |
WebGPU adapter selection should log decisions to the console |
NEW |
| 1971928 |
Demo at https://hucanco.de/dragon-rs is slower/jankier in Firefox |
NEW |
| 1971937 |
Demo at https://codepen.io/random233/pen/BaYEwvr?editors=1000 is 2x slower in Firefox |
NEW |
| 1971942 |
Assertion failure: gMappedMemorySizeBytes == 0, at gc/Memory.cpp:468 |
NEW |
| 1972077 |
Convert Performance to config-based prefs |
NEW |
| 1972090 |
Convert Translations to config-based prefs |
NEW |
| 1972132 |
[Experiment] if first click on infobar primary button is fast, second click sometimes required |
NEW |
| 1972157 |
Testcase creating N SVG-masks is 14x slower in Firefox (spending all the time in nsINode::ComputeIndexOf) |
NEW |
| 1972195 |
Could `mozilla::webgpu::ExternalTextureDMABuf` use timeline semaphores? |
NEW |
| 1972255 |
[V-T] Artificial testcase rapidly leads to rapid memory use and OOM/system hang |
ASSIGNED |
| 1972293 |
Testcase adding N scroll-roots is 75x slower in Firefox compared to Chrome (N=50000) |
NEW |
| 1972315 |
Testcase resizing a png N times is 9x slower in Firefox compared to Chrome (spending a lot of time around style) |
NEW |
| 1972403 |
Can we get SoftVision to check WebGPU Samples and such for us? |
NEW |
| 1972458 |
very high frequency failure on ubuntu 24.04 ccov: browser/components/translations/tests/browser/browser_translations_recent_language_memory_full_page_and_select_multi_window.js |
NEW |
| 1972467 |
TEST-UNEXPECTED-TIMEOUT ?q=webgpu:api,validation,createBindGroup:storage_texture,format:* | :storageTextureFormat="rg16float";resourceFormat="r8snorm" |
NEW |
| 1972485 |
Bring `GPUDeviceLostInfo.reason` and `GPUDeviceLogReason` up to spec. |
ASSIGNED |
| 1972486 |
WebGPU: ride the trains to stable on Windows 🎉 |
ASSIGNED |
| 1972517 |
[WebGPU] Very poor texture upload performance when passing canvas |
NEW |
| 1972521 |
[WebGPU] Out of memory error when rendering frames as fast as possible |
NEW |
| 1972545 |
Videos on lemonde.fr have audio and video badly sync after fast forward |
NEW |
| 1972624 |
WebGPU on Vulkan may not degrade gracefully if semaphore creation fails |
NEW |
| 1972626 |
[Search Consolidation] Test fixes for performance issue |
ASSIGNED |
| 1972628 |
WebGPU cornell sample doesn't display anything |
NEW |
| 1972635 |
qwen3-webgpu is ~10x slower than Chrome |
NEW |
| 1972649 |
Slow performance on https://downloads.scirra.com/labs/textscaling/webgl/index.html |
NEW |
| 1972660 |
The animation to open and close the New Tab's "Customize" button is janky and not smooth. |
NEW |
| 1972697 |
[wpt-sync] Sync PR 53221 - Use paused animation for WPT fractional translation tests |
NEW |
| 1972748 |
[gpu-canvas] Canvas animation judders on codepen demo (https://codepen.io/fdb/pen/jbjzgY) |
NEW |
| 1972801 |
"The innerWindowId for the TranslationsParent was not available." error when running WPT |
NEW |
| 1972803 |
AMD GPU Page Fault (likely null pointer de-referencing) |
UNCONFIRMED |
| 1972921 |
WebGPU does not display textures rendered by a compute pass |
ASSIGNED |
| 1972949 |
WebGPU: A valid command buffer can be invalidated by subsequent calls on the encoder |
NEW |
| 1972970 |
Demo at https://beta.dwitter.net/d/33992 is slower in Firefox |
NEW |
| 1972972 |
Demo at https://beta.dwitter.net/d/33991 is slower in Firefox compared to Chrome |
NEW |
| 1972976 |
Demo at https://beta.dwitter.net/d/33924 is slower in Firefox compared to Chrome |
NEW |
| 1973135 |
Update WebGPU CTS to new version 97733807d3c40aeb165cf2fbe4137f23c92446ea from 2025-06-17 18:21:15 |
NEW |
| 1973173 |
Testcase generating WASM modules that calculate sum of integers is 4x slower in Firefox |
NEW |
| 1973176 |
Testcase that generates WASM modues with empty functions and variables is 10x slower to execute compared to Chrome |
NEW |
| 1973195 |
[Menu Redesign][a11y] Unexposed text suggestion received for "Translate page" menu item |
NEW |
| 1973210 |
New wpt failures in /css/css-view-transitions/fractional-translation-from-transform.html |
NEW |
| 1973229 |
Perma wasm/jsapi/memory/to-fixed-length-buffer-shared.any.js | (args: "") [0.1 s] - when Gecko 141 merges to beta on 2025-06-23 |
NEW |
| 1973328 |
translate to Chinese not working on fenix release |
UNCONFIRMED |
| 1973339 |
Testcase generating WASM modules with shared memory spends 95s around GC (maybe not recovering from OOM correctly?). Chrome errors cleanly. |
NEW |
| 1973483 |
Firefox defaults to software webrender (WebRender(software)) despite compatible GPU hardware acceleration support |
UNCONFIRMED |
| 1973501 |
[WASM] demo at https://codepen.io/wakana-k/pen/JodmmQJ is slower in Firefox compared to Chrome |
NEW |
| 1973550 |
tier-3 cleanup: promote webgpu-long to tier-2 or make try only |
NEW |
| 1973735 |
Pinning tabs via drag and drop is slow in a window with many tabs |
NEW |
| 1973739 |
Test model performance with different quanitzations |
NEW |
| 1973770 |
Implement `GPUDevice.adapterInfo` |
ASSIGNED |
| 1973771 |
[Menu redesign 2025] Evaluate performance degradation if any because of menu redesign being enabled |
NEW |
| 1973796 |
Perform mach port check-in async |
NEW |
| 1973856 |
WebGPU CTS causes assertion failure: webgpu:web_platform,canvas,getCurrentTexture:single_frames:* |
NEW |