After battles I get this. You can't really select anything ( or it isn't apparent) Also, 'i' doesn't let me pop up the menu. I don't know how to go back in map. Like if I go into a cave...and I just stuck there? Like whoops, it's all hard wolves in here...guess you'll die. hahaha.
You should decide into what fight you go, so if you are in one you cant leave. The item collection reward after a fight was unfortunately not finished, thats why you cant select anything