Created attachment 165372 [details]
Problem shown with slow animation speed

SUMMARY
When you open a widget like Application Launcher or the clock widget, there is an animation which makes the window appear slightly white. This effect doesn't seem to apply immediately as the widget appears on the screen, and gives a kind of flickering appearance as the bottom of the window suddenly switches from a darker shade to having the whitening effect applied.

The effect is easiest to see with a slow animation speed.

STEPS TO REPRODUCE
1. Decrease the animation speed (to see the effect easily, although it still exists with a higher speed and causes a flickering effect)
2. Click on a widget like the system clock or application launcher

OBSERVED RESULT
The colour of the widget is darker at the bottom because the whitening effect is not applying immediately.

EXPECTED RESULT
The widget is a single uniform colour throughout the entire animation


SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 39
KDE Plasma Version: 6.0.80
KDE Frameworks Version: 5.249.0
Qt Version: 6.6.0
Kernel Version: 6.6.13-200.fc39.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 3600 6-Core Processor
Memory: 15.5 GiB of RAM
Graphics Processor: AMD Radeon RX 6750 XT

ADDITIONAL INFORMATION