Window/widget render issues on Debian 11 KDE (virtualbox)

[midvok]

Hello,
I successfully installed Debian 11 KDE in VirtualBox (I would like to migrate to Debian from Windows, but want to test and configure it first in VirtualBox).

Currently, I try to configure the KDE plasma widgets, but I have a weird issue with rendering the KDE widgets/windows, which after certain time start showing only "empty screen".
Best to show the issue in pictures...





I can fix that by restart, but after I log in, it always starts to happen again after few minutes of work.

I installed everything from debain stable repository, including the latte-dock by `apt install latte-dock`.

This is my VirtualBox display setting (RAM 4GB, 2 CPU cores):


Please, any idea what can cause this issue?

[midvok]

OK, I came to conclusion that it's the Virtual Box problem.

The render issue stopped to happen when I tried to disable the option "Enable 3D Acceleration" in the VirtualBox (ironically). Then, just some plasma effects wasn't enabled (like blur).

Virtual Box is probably not the best VM to test KDE Plasma, so I'm going to try VMware now.

[peer]

no problems with debian 11 KDE in qemu/kvm