When I fail at making compounds, I get the "That was a learning experience: + 5 iMG" (or 2 or 3 or whatever), but I don't actually *get* the img. I do get it for making compounds, but not for my failures, despite what it claims.
Sorry Tanaise- yeah, it's known. (We don't have every single bug listed in known issues, most of them are ones that we get more cases/questions generated from.)