The recent Nightly update has changed all the browser pages to Dark Mode. See screenshot Need to get it back to how it is in 88. The screenshot shows that both browsers are in Dark Mode, but 88 settings page and others are not Dark.

Operating System: openSUSE Tumbleweed 20210422 KDE Plasma Version: 5.21.4 KDE Frameworks Version: 5.81.0 Qt Version: 5.15.2 Kernel Version: 5.11.15-1-default OS Type: 64-bit Graphics Platform: X11 Processors: 8 × Intel® Core™ i7-4810MQ CPU @ 2.80GHz Memory: 31.0 GiB of RAM Graphics Processor: Mesa DRI Intel® HD Graphics 4600