Moved items don't delete
Normally, when I move a File from one Folder to another in Finder, the File will disappear in the original Folder once it's moved to the new Folder. For some odd reason, lately, Files do not get removed when I move them. If I move a File from one Folder to another on my Macbook Air, the file remains in the original Folder and is duplicated in the new Folder.
Does anyone have any idea how this happened and, more important, how to fix this?
MacBook Air, macOS 13.1