NHF – new heroes for Heroes V 3.1.

It usually happens on a map with 8 players.
It doesn't always happen.
It's more noticeable on the 1st turn, then it sometimes disappears, and sometimes it doesn't appear at all.
It also disappears if you enter the hero interface using a quick key on the keyboard, but again, not always. Moreover, it might work for one player, but the bug disappears for everyone.

For now, there are no more ideas about this. The bug isn't that serious.

In the video about Dungeon, a bug was caught with Olhar: his bonus differs in the city garrison and in the gates.

Added 15 minutes later
Or is this normal behavior? Then it should be stated more clearly in the ability description.
The specialization triggering when being in the gates is still more intuitive.