Broken in FF 112/113 about firefox-uwp-style HOT 6 CLOSED

Hi, it seems like dcomp is finally heading to the stable channel, and its fallback is broken which means Mica will be partially working in other windows like about, history, downloads... Enabling back gfx.webrender.dcomp-win.enabled should partially fix the issue or at least get it to a usable state.

EDIT: dcomp is already on the stable channel... but disabling it doesn't break like in beta or nightly so that change is still valid at least for 112.

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Hi enabling gfx.webrender.dcomp-win.enabled seems to have fixed the issues for now on v113. Thanks

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Closing, since the CSS properties used to get Mica working were removed from Firefox. It will work until 117 releases.

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Using Firefox Nightly 121.0b9, I can see the Mica working at startup until the page loads. Since this is a CSS issue, could an extension or other modification to the browser be used to re-enable this functionality? Maybe tweaks could be made to Librewolf or another fork.

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Hello @ShayBox!

Bug 1850979 discusses a bit about support for transparent backdrops on Windows and contains a POC with support for mica.

If you get that working you only need to partially revert commit dd97d62 only restoring the transparent background rules and keeping all other changes since both appearance rules and media queries changes must remain.

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I'm hopeful support gets added, but I think I'm going to use Firefox ESR which still supports transparency until either FF, LF, or another fork reverts/supports transparency in the future. 👍

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