The desktop app used to be a glorified FUSE app that worked well (except on ARM Linux for some reason) and got out of your way. Now Dropbox has decided it's time to ruin the desktop app in an effort to chase conversions. This strategy will fail.
Fortunately their cloud storage backend still works (unless it bugs you that they just increased the price a little bit while doubling the storage). There are several third-party clients that seem to work as replacements for the Dropbox client app. I'll probably move to Expandrive, which now supports Linux (it didn't before). Other suggestions welcome.