Confirmed, here the same. Just upgraded to 1.14.3: Trading-GUI opens for half a second and closes automatically.
=> happens for all "old" villagers that were traded with before (in previous versions)
-> all "new" villagers (that chose a new profession and never were traded with before) are ok
– some villagers with minimal trades (one or two times max.) in the past work as well, so it seems like it depends on when (in which version?) they traded at first...
Markus Vetter
Confirmed, here the same. Just upgraded to 1.14.3: Trading-GUI opens for half a second and closes automatically.
=> happens for all "old" villagers that were traded with before (in previous versions)
-> all "new" villagers (that chose a new profession and never were traded with before) are ok
– some villagers with minimal trades (one or two times max.) in the past work as well, so it seems like it depends on when (in which version?) they traded at first...