lightroom classic crashes constantly when copying text from image caption to another application

I always put a caption on all my pictures. Some applications/websites dont facilitate displaying the embedded caption so I have to copy from LR to that application/webpage.

So.. the problem is:

1. copy a caption in LR by selecting the captions complete text with Ctrl+A

2. move focus to the other app or webpage

3. LR crashes or rather just disappears without leaving any trace. It does not produce a crash file of any kind that I can see.

4. When I open again there is nothing lost but it happens again and again and again.

5. It does not help to disable GPU in LR.

Windows 10 updated to latest possible update. All drivers are up-to-date.

Lightroom Classic version: 12.5 [ 202308091523.

PC Gigabyte Aero with 64GB memory and a lot of hard disk.

I have no other application that crashes constantly.