No idea what's happening here. After upgrading, I'm completely unable to type a slash (shift + 7) on Sublime Text running on my macbook. Does not matter if I'm in a text file, a CSS, an HTML or anything else. I press SHIFT + 7 and nothing happens.

Now, I'm quite sure this may be my fault due to something I might have installed or a setting I messed with, but have no idea where I should be looking at. Any help is appreciated!