moving folders and files in finder and changing the sidebar is unreliable
I find that if I want to move a file or move a folder or change the finder sidebar, it sometimes just will not work.
The simplest example is moving a file from one folder to another. I click on the file to highlight it, then click/hold to try to move it. Often the file won't go anywhere. I've found that if I click/hold with a "swirling motion" that this seems to "pickup" the file or folder and then I can move it. It might just be coincidence though that this appears to work.
What could be simpler than click/hold and move?
Yet, sometimes I have to repeat this as much as a dozen times to move the file/folder.
The file/folder (or sidebar entry) always highlights. There doesn't appear to be anything happening WRT the file or folder (it isn't open in an application, there are no iCloud icons next to it), but the thing just won't move. I often have to try it repeatedly and/or wait an extended period of time (at least 1 minute, but this is subjective so it could be longer).
This has been happening since I upgraded to Mojave, now I am on Catalina so it has been over a year.
I also have this problem if I want to drag a file/folder to the trash but if I select "Move to Trash" from the finder window tool bar, there is no problem
MacBook Pro 13”, macOS 10.15