While trying to set up click-castings for spells, I ran into issues.
I was attempting to use keyboard buttons 1-0 as keybinds. When using 1-5, they bugged out and changed to mouse buttons (1 = left, 2 = right, 3 = middle, 4 = Mouse4, 5 = Mouse5). When I typed in a 1 and clicked Save at the bottom, it would auto-change to left, for example. Using other keyboard keys like 'Q' and 'E' worked fine. Upon trying to use keyboard button 6, I ran into other issues. When I typed in 6 and clicked Save at the bottom, it turned all custom keybinds invisible. I know they are invisible and not deleted because when I click 'New' enough times then it causes the window to scroll down, as if making room for more things that arent there.

Confirmed, wrong regular expressions caused this issue.
Fixed! Thanks!
I'll release it later.