Board Game Arena

The situation is like in the picture below.
So I assumed , when attacking the blue Cleric with my Thief, my Troll and Mekanork would also participate in combat, as well as blue's Thief. Yet only my Mekanork was added to the group combat, not the other two. I reread the rules, and to me it seems all characters standing next to the ones participating in combat are added to the group combat. So what am I missing?

Btw, the Troll got revived this round. Just mentioning it in case it matters.

Thanks for any help !!

Hello,
This is not a bug.
Troll can't do any action, including taking part in a combat after using his special ability. He's too exhausted...

Ok thank you