When connecting to the Ubuntu desktop, there are some graphical issues. For example in the NoMachine welcome panels some button labels are missing or not all characters are displayed in the instruction boxes.

This problem has been reproduced with Ubuntu 22.04.5 running on VirtualBox version 7.0.22 r165102 (Qt5.15.2).

The client is running on Windows 10 ent. 10.0.19045.

As a workaround, "disable 3D acceleration" in VirtualBox settings.

Further investigations are needed to determine if this problem is caused by some interactions with VirtualBox and can be solved on NoMachine side or requires updates to the Virtual Machine.