What about this bug?
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.