I have the following problem:
When I try to move a file to another folder using drag and drop, the file remains in the original folder, and a file named 256-256-crop.png is created in the target folder instead.
However, if I use the context menu, both copying and moving work perfectly.
This issue only affects one specific user. I have already tried the following steps:
Cleared the browser cache
Cleared the Nextcloud cache
Disabled preview image generation
Checked and reassigned permissions on the directories (to www-data)
Deactivated and removed all add-ons
Created a new user, who does not have this problem in the same environment
Restored a backup, but the issue persists
Tested with different browsers (Chrome, Edge, Firefox)
Tried from a completely different computer and tablet — same problem every time
Does anyone have an idea what could be causing this?