Re previous MCPE-139141
I set up a villager trader. I place the lectern block, and usually break the lectern until I get the right trade. If I leave the area during this process, or log out at any point, the trades remain the same as the last shown trade and the villager no longer swaps trades, even though I haven’t traded with the villager. I tested this on several villagers, and it’s consistent.

I am 100% certain that these villagers were linked to their specific workstation on each occasion. When I tested this with several villagers, one at a time, I removed the ‘failed’ villager and their workstation from the area each time so there would be no cross attachment. I even tried different slots in the area, in case it was a location issue. Each villager lost their trade when the workstation was broken, and took up their trade, with the green particles, each time they reconnected. My trader area is within a chunk and not crossing borders.

I am certain that each villager had not been traded with previously as they came from a villager breeder. I am also certain that I didn’t trade with them at the stage of placing them into the trade area, as I didn’t keep anything in my inventory, so there could be no mistakes.

Also I’m not clear what version this is on, I have a PS4 and am using the latest bedrock version which is 1.17 (and plus some amendments as I have installed all updates that were rolled out). I also couldn’t see how to re-open my call so I logged another one, sorry.