Drag and drop selection does not work as expected; selection automatically moves up and to the left

I recently had a change in the way my drag and drop functions. If I select a block of numbers, as soon as I go to drag it I get a selection box about 2 rows up and 3 to the left. If I release the mouse, the data is dropped there. If I want to move it elsewhere, I have to position this new box to that location and release. When I click to drag I notice the arrow has a dashed square at the bottom - since I can’t get it to work correctly I don’t know if this is normal, I’ve never paid attention.

Drop and drag worked correctly a couple days ago. I created a new spreadsheet to see if it is an issue with the one I was using, the issue is the same.

I don’t know if I inadvertently clicked on something to create this behavior, but if I did I have no idea where. What can I do to get things back to normal?

Using windows 11, updated to libre office 25.2.0.3 (X86-64) after this first happened in case it was a problem with the older version I was running. Can’t tell you which one that was. Logitech mouse with the latest drivers.

How do you select? With mouse or keyboard? With both?