Just after login I see a black box on the Plasma desktop. Till I open any window that covers it, then the box disappears. It also happens on the live USB.
Operating System: Manjaro Linux
KDE Plasma Version: 5.25.5
KDE Frameworks Version: 5.98.0
Qt Version: 5.15.6
Kernel Version: 6.0.2-zen1-1-zen (64-bit)
Graphics Platform: X11
Processors: 4 × AMD A10-8700P Radeon R6, 10 Compute Cores 4C+6G
Memory: 15,1 GiB of RAM
Graphics Processor: AMD Radeon R6 Graphics
Manufacturer: TOSHIBA
Product Name: SATELLITE L50D-C
System Version: PSKXJE-00600KCE