villagers seem to be unable to trade, with certain villagers when i open the trade window it quickly flashes then disappears, logging in or out doesn't help, neither does sleeping

Put the summary of the bug you're having here

What I expected to happen was...:
the trade window to open normally with a villager i was going to trade with

What actually happened was...:
the window flashed quickly and closes automatically 

Steps to Reproduce:
1. try to trade with my master level Fletcher villager
2. after night time it frequently appears in the pen i made to hold cattle
3. ...