[Update 93: Patch 1.03 - Important Community Fixes]

What about this bug?

 

My companion back at the keep ran about 3 adventures, 1 major and 2 minor while I was away. When I got back to the keep I expected the rewards to be stacked in the treasury chest, however all I got was one lousy scroll (assuming it was the reward from the last minor).

This makes me assume that unless you pick up the reward after the adventure is complete they get overwritten in the chest, so you'll be missing out on rewards if you're not heading back after each completion.

 

 

I got same problem. Instead one lousy scroll I've got nothing in chest. After couple of adventures ran by my companion my chest is empty. Even if I got message that rewards are waiting in chest in the main hall. Rewards are missing.

And another thing (maybe it's a feature not a bug?)
When I remove companion and join him/her again all stats of this certain companion are reset. No history about the biggest creature he/she killed, how many points overall he/she made etc. before removing him/her from team.

[1.03: Hotfix for Problem with Adventurer Hall Companions]

Yeah, with 1.03 GOG version lockpicking and door opening by custom made companion not working. Pitty, that you are able to broke the game with a one single update.