Bug 455142

SUMMARY
For a little while, I've noticed how the titlebar takes a while to update to a new tint if the wallpaper is changed, for example. In my example, if I change wallpaper once, it doesn't update (and I noticed it doesn't apply immediately to toolbars either). If I update it again, the tint does update but to the one it should've had previously, not the current one, so it's always offset to the previously applied wallpaper, not the new one. This gets more visible when using a tool like Koi to update the color scheme between light and dark along with the wallpaper but it still happens on manual wallpaper change too. Only way to circumvent this is by manually switching to another color scheme and reapplying it.

STEPS TO REPRODUCE
1. Have a color scheme with tinted windows based on highlight colors/wallpaper
2. Change the wallpaper a few times

OBSERVED RESULT
Titlebar doesn't update to the most recent tinted color

EXPECTED RESULT
Titlebar update to the most recent tinted color like the window itself

SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20220608
KDE Plasma Version: 5.25.80
KDE Frameworks Version: 5.95.0
Qt Version: 5.15.2
Kernel Version: 5.18.2-1-default (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® Core™ i3-7020U CPU @ 2.30GHz
Memory: 11.5 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 620
Manufacturer: LENOVO
Product Name: 81FE
System Version: Lenovo ideapad 330-15IKB

ADDITIONAL INFORMATION
Using KDE Plasma from Unstable Repos for openSUSE Tumbleweed