I have a weird randomly reccurring issue with Solidworks (2025 SP5.0 + PDM) NVIDIA RTX A500, HP Z6 G5 Desktop. I wonder if anyone else has seen something similar and can suggest a cause?

On random Parts or Assemblies (not seen on Drawings as yet) the Windows Title bar sort of "disappears". I have a Solidworks logo + version + name on the top LH side, and the basic Minimise/Restore/Close on the to RH Side. The Title Bar commands - File / Edit / View etc are all missing. Not seen on any other application except SW.

If I switch windows to a different assembly/part the title bar detail usually reappears. I switch back to the affected assembly/part and Title Bar is still gone. 

If I save/close the affected part, and reopen, the Title Bar is back where it should be.

Sometimes this happens on multiple parts, if I close & restart Solidworks solves the problem...for a while at least.

We have 6 engineers here all with the same build, I am the only one seeing this behaviour.

No title bar:

What is should look like

Any ideas?