I couldn’t find a link to the bug reporting system for unity, But I have found a minor bug in the shortcut assigning for Editor scripts on PC unity.
I am unable to assign lower case letters e.g. _p for simply p, but it responds to Shift P, or p with a caps lock on.
Can provide more details if necessary.
You can report a bug via the editor (Help->Report A Problem)
I reported two bugs this way but I agree that being able to see the bugs already existing would be good 
Btw you should attach a small project with which they can test your issue.
However -I might be wrong- but I think you should detect the upper/lower cases yourself. In your code you test if Shift is pressed or Caps Lock is on to detect upper/lower input.