Right mouse click on villagers, villagers' trading interface did not pop up

I've got this one.  Recently updated client and realms server to 1.14.3, finally got leftover 1.13-spawned villagers on our server to properly claim their workstations...and now I can't access their trading UI to trade with them much of the time.  Oh, sometimes it works...and on those occasions, leftover 1.13 villagers do not seem to EVER lock trades, while 1.14-spawned villagers do after the usual 6 trades or so.  But much of the time, the interface pops up for a fraction of a second then immediately closes.  It doesn't seem to matter if I click with my mouse/trackball or the buttons on the touchpad of my laptop, so I don't think it's a hardware issue. 

Duplicate of MC-154201.