Hello pitajnx,
the described behaviour looks as if PhysicalDesktopMode 0/1 or VirtualDesktopMode 0/1
are set in the server configuration file. This enables view only mode.
You can verify by executing in cmdline:
grep DesktopMode /usr/NX/etc/server.cfg
By default it is set to 2 which is interactive. Try setting it back to 2 rather than 0 or 1.
The key PhysicalDesktopMode setting is used when we find an x server running.
The key VirtualDesktopMode is used when we start nxframe buffer when we don’t find an x server running.
If the output shows 2, please enable debug and share logs as described here: https://www.nomachine.com/AR07K00677
The logs can be attached here or sent directly to forum[at]nomachine[dot]com.