I am not sure if it is a bug or not but my last character was a truekin and I could just press tab and open all the menus and such but I made a mutant this time. The attributes screen is blank and tab usually does nothing. If I do manage to open the screen the blank window opens and I can still move around my character behind it. If I press E it will switch to equipment and then I can close it. No idea what is going on. I tried making another copy of the same character and had the same issue.