Affects Version/s: Minecraft 19w11b
Fix Version/s: None
Environment:Java 8 64-bit, Windows 10 64-bit, running via MultiMC.
I've been playing around with the new snapshots (and I must admit I'm enjoying playing around with the new trading system!).
I noticed that, after a creeper blast has destroyed a farmer's work site (a composter, totally not my fault... honest), that the trades for that villager no longer refreshed and it seems as though placing a new composter isn't enough to fix this.
I've done some testing in a separate test world and found the same thing - the data as given by the /data get entity command shows that it's still pointing at the previous job site which supports what I had suspected.
I can't imagine that this is intended behavior as it would render trading refreshes impossible if the original work site is damaged or changed.
If there is anything specific you'd need to investigate this, please let me know.