I decided to stop using Dropbox.
It was this cool thing in the past that does magic but after several years, the cool things wore off. It’s no longer capable of syncing an iPhone while preventing the mac from doing that by itself (a recurring bug). It does some nasty things to Finder. It captures the screenshots and attempts to make you share a dropbox link instead of use the screenshot by itself. These features are creating more problems than they are solving and I’d rather try something else.