Can confirm, on 1.15.2 server, we have 2 buildings that reach build limit. When crossing the chunk border where they are loaded there is a 1.5-2 second lag spike which happens for all players.
I only say this is a bug because I have done what the Mojang Support page said and it didn't work so I assume Its not a feature.
They Sort of Fixed it in 1.14.3.
I have custom Villagers on my server, and the only way to make custom villagers work pre 1.14.3 was to make them green coats which doesn't work because they cannot have work stations.
Sorry for the duplicate! I searched everything I could think of but didn't see the same bug mentioned, I'll be sure to double check next time and save the team some work 🙂