At the moment it's "Yaru-dark / Yaru" and the issue remains. I was using a third party theme when I first encountered this. I switched back to Yaru before filing this bug, but about:support was still showing the third party theme. After resetting the theme it's showing "Yaru-dark / Yaru".
I did some more testing with a separate login I use for steam and a new FF profile. It seems to only happen when a a FF colorways theme is used. If the default theme is used I am able to see a difference in the titlebar shade (it's too subtle IMO, but I can see it). -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1957944 Title: CSD do not distinguish focused and unfocused FF windows Status in firefox package in Ubuntu: Incomplete Bug description: After the FF 96 upgrade I can't distinguish focused and unfocused FF windows from their client side decorations. Previously the distinction was subtle, but not impossible. The attached image shows two windows, the one on the left has focus. The only way you can tell this is that the scrollbar is faded in the unfocused window. ProblemType: Bug DistroRelease: Ubuntu 21.10 Package: firefox 96.0+build2-0ubuntu0.21.10.1 Uname: Linux 5.14.0-051400-generic x86_64 AddonCompatCheckDisabled: False ApportVersion: 2.20.11-0ubuntu71 Architecture: amd64 BuildID: 20220106144528 CasperMD5CheckResult: unknown Channel: Unavailable CurrentDesktop: ubuntu:GNOME Date: Fri Jan 14 13:15:27 2022 DefaultProfileExtensions: extensions.sqlite corrupt or missing DefaultProfileIncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite) DefaultProfileLocales: extensions.sqlite corrupt or missing DefaultProfilePrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/firefox/omni.ja:greprefs.js:365 DefaultProfilePrefSources: prefs.js DefaultProfileThemes: extensions.sqlite corrupt or missing ForcedLayersAccel: False IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2019-06-18 (941 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) ProcEnviron: TERM=tmux-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash Profile1Extensions: extensions.sqlite corrupt or missing Profile1IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite) Profile1Locales: extensions.sqlite corrupt or missing Profile1PrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/firefox/omni.ja:greprefs.js:365 Profile1PrefSources: prefs.js Profile1Themes: extensions.sqlite corrupt or missing Profile2Extensions: extensions.sqlite corrupt or missing Profile2IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite) Profile2Locales: extensions.sqlite corrupt or missing Profile2PrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/firefox/omni.ja:greprefs.js:365 Profile2PrefSources: prefs.js Profile2Themes: extensions.sqlite corrupt or missing Profiles: Profile1 - LastVersion=96.0/20220106144528 (In use) Profile0 (Default) - LastVersion=96.0/20220106144528 (In use) Profile2 - LastVersion=71.0/20191205203726 (Out of date) RebootRequiredPkgs: Error: path contained symlinks. RunningIncompatibleAddons: False SourcePackage: firefox UpgradeStatus: Upgraded to impish on 2021-10-31 (75 days ago) dmi.bios.date: 11/27/2019 dmi.bios.release: 5.14 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P2.90 dmi.board.name: B450M Steel Legend dmi.board.vendor: ASRock dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP2.90:bd11/27/2019:br5.14:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:skuToBeFilledByO.E.M.:rvnASRock:rnB450MSteelLegend:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.family: To Be Filled By O.E.M. dmi.product.name: To Be Filled By O.E.M. dmi.product.sku: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1957944/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp