Reset Bridge Preferences first:
Start Adobe Bridge and immediately press Ctrl+Alt+Shift (Windows) or Command+Option+Shift (Mac OS) until the Reset Settings dialog box appears. Select all three options--Reset Preferences, Reset Standard Workspaces, and Purge Entire Thumbnail Cache--and then click OK.
That could be the correct answer. I called Adobe and was informed there's a bug in PS update v19.1.1. Support uninstalled and installed v19.0. Told to wait about 15 for the next update which will fix the bug.
I see. I don't recall any 19.1.1 bugs on my end, but many problems are caused by corrupt preferences and those can be user-fixed.
But what may not be a problem on my PC can be on yours', so downgrading is another good idea.
I'm glad it's fixed. Thanks for reporting back.