I have an infuriating problem with selected linked files that's been going on for years now.

If a linked file becomes selected (often by dragging within it's area to select other items) it is then impossible to deselect it again. I generally work with the Path Selection Only option on but a link often gets selected anyway and then this problem occurs. It's usually necessary to close the document to get out of it.

Occasionally, deselecting the file in the links panel used to work, but this problem has generally got worse. It sometimes results in editing an item unintentionally.

CC2019
Mac OS X Mojave (and previous systems)