All, On Tumbleweed, I've had problems with Gtk apps. Since install, some Gtk apps like Gnome-Sudoku do not see the initial mouse click on the app. You have to click twice for the app to see the mouse click (likely GDK not being able to figure out what window to route the click to so it is discarded). This may be related to the issue with the openSUSE builds of Firefox and Thunderbird not seeing the middle-mouse scroll inputs unless the FF/TB window is focused as the top-level window. (the binary download from Mozilla.org works fine and does not exhibit this behavior) The workaround for the openSUSE Firefox and Thunderbird builds is to set the environment variable GDK_CORE_DEVICE_EVENTS=1. This doesn't fix gnome-sudoku initial mouse click behavior. After zypper dup last night, the gnome-sudoku app using the Nordic-darker theme has flip-flopped which window it messes up. Before update, the playing board was fine, but the number-pad popup was fuzzed out. After update it is reversed, the playing board is washed out, cell lines gone, etc.., but magically the number-pad popup is now perfectly themed. (the Nordic-darker theme is current from 10/10, two days ago, from gnome-look.org. The prior version of the theme from September showed the same behavior before updating to the latest version. Here is a screenshot of gnome-sudoku showing the washed out playing board and the perfect popup (not really playable like this): https://paste.opensuse.org/pastes/8e1f3bab400d Has anyone seen similar behavior from gtk apps? Any idea what change could have caused dark theme interpretation to change as shown in the screenshot? The gnome-sudoku package info is: Name : gnome-sudoku Version : 47.0 Release : 1.1 Architecture: x86_64 Install Date: Fri 11 Oct 2024 02:47:46 PM CDT Group : Amusements/Games/Logic Size : 474759 License : GPL-3.0-or-later Signature : RSA/SHA512, Tue 08 Oct 2024 10:51:12 AM CDT, Key ID 35a2f86e29b700a4 Source RPM : gnome-sudoku-47.0-1.1.src.rpm Build Date : Fri 13 Sep 2024 11:10:39 AM CDT Build Host : reproducible Packager : https://bugs.opensuse.org Vendor : openSUSE URL : https://wiki.gnome.org/Apps/Sudoku Summary : Sudoku Game for GNOME Description : Sudoku is a logic puzzle game, in which one must fill a 9 by 9 square with the correct digits. Distribution: openSUSE Tumbleweed The behavior of Gtk apps has been one of the only frustrating issues with Tumbleweed, which aside from those quirks has been near flawless and and exceptionally enjoyable distribution. All thoughts welcomed. I've chased this issue on and off for a couple of months and it looks like it could be one of about a dozen regressions in Gtk/GDK from the past 8 or so years. -- David C. Rankin, J.D.,P.E.