psd files disappear / are deleted after some time in Lightroom and in the storage folder.

LR 12.4 / Photoshop 24.7.0 / Photoshop Beta -> current version.
Operating system Windows 11 / 64bit

Since I installed both Photoshop versions, I keep getting "save errors". In Lightroom the edited & saved psd file is displayed correctly to me. This can also be processed in the export tab.

After a few days, the preview of the psd file is shown to me in LR  and the correct path, but this can no longer be found (Photo is missing). It is simply gone! This is also not in the auto-recover folder under is also in "recently opened files" no longer findable.

I have had this problem in a short time with several projects and always a bulk of documents edited at the same time has disappeared.
Partially these can be found in the archive still with 0 KB.

The files were partially edited in PS 24 and in PS Beta (simply because LR opens the last used PS version).

As I said, this problem exists only since the use of both programs and I just do not understand it, how a file can simply "disappear" without being deleted by me.

Do you have any idea / or the same problem? It's really terrible when many hours of work are just lost (even though they were there before)