I literally can't modify one class, finish modifying it, and then modify another. I have to modify one, exit, re-enter, and modify the secondary weapon. If I want to modify something else, I have to repeat the entire process: enter, modify, exit, modify again, exit, enter, and so on.
Is there a specific reason why this is happening? Is it a bug? Is something misconfigured, or is it simply a design flaw, or am I doing something wrong?