User Info RequiredGame crashes for client in head-to-head campaign when starting quest battle

FatherDagon

During MP head-to-head campaigns we have noticed that the game crashes for the client if the host is about to start a quest battle and the client is clicking around in settlements, provinces, maps etc.
This happens every time the client is being active while the host tries to start the quest battle.

If the client does nothing, then the battle starts normally and the client is allowed to spectate

Lexi_CA

Please can you attach to a comment all of the requested files listed here:
https://forums.totalwar.com/discussion/173611/guide-to-posting-in-multiplayer#latest

Then we can begin to investigate. Thank you