Not really a bug, but a bit annoying

Thanks for the report, could you please define "spamming" in this case ?
When this is happen every few seconds even if the NPC is not adjusted, then it's a bug.
If this only happens when you change something on the NPC, then it's expected in the beta, but I will try to avoid "unneeded" logs entries.

well it mostly happens every few minutes even when the NPC is not adjusted ( I think trading in the NPC's trading gui should not be a kind of adjustment?)

Thanks. Ok then this is more like a kind of bug. ;)