What is the bug? This is the first I'm hearing of it.
Well for the newest Settlement, the first 2 diplomacy buildings are 2x3 and 3x2, with there being no 1x1 buildings. Anyways, the pop-up on both of them says that when 1 to 5 of them (the max # depending on which one) are "attached to the sides" of the Embassy, that they are suppose to give a stacked amount of extra Diplomacy, which at this time they don't.
Considering that with the larger Diplomacy buildings it will end up taking much more space to get the required Diplomacy, NOT getting that stacked amount could/would end up either making you possibly not getting the top Reward for time, or else having to spend Diamonds to make up being "short" on the needed Diplomacy amount.
When I put a in ticket to Support, I got the "usual" prepared answer of "We are aware of this issue" BS, and of course with absolutely no time table, because Support doesn't have any actual contact, re: talking to the other "depts", and pretty much all of the "answers" we get are from the list that Inno gives them, to give to us Players.
I mean I get "official" Threads all the time about "liking" them on Face-fart or about something on Twitter, yet for something like this, as is the usual practice at Inno, nothing but silence, with no message sent nor anything about it in the Forum.