Created attachment 131643 [details]
Image shows the issue .
Occaisionally, there are dark shadows under the middle of a blurred transparent window and nowwhere else- these shadows flicker in and out and are not from any discernable window- and hold position when I move a blurred window around. Picture attached.
STEPS TO REPRODUCE
1. Open a blurred, transparent window- eg Konsole
Blurry shadow under window
No blurry shadow.
Operating System: Manjaro Linux
KDE Plasma Version: 5.19.5
KDE Frameworks Version: 5.73.0
Qt Version: 5.15.0
Kernel Version: 5.7.19-2-MANJARO
OS Type: 64-bit
Processors: 16 × AMD Ryzen 7 3700X 8-Core Processor
Memory: 15.6 GiB of RAM
Graphics Processor: GeForce GTX 1070 Ti/PCIe/SSE2
*** This bug has been marked as a duplicate of bug 421135 ***