BUG FOUND!!! if you go to the options menu and go to keys after you reboot after changing all of your keys to something else they will reset to their defaults yet you can still use what you have changed last time
the screenshot will help basically last time i changed my keys I changed "Reload" to "R" and it has been reset to Q on the menu BUT I can still use "R" and "Q" isn't useable same goes for crouch it's not F and C it's CTRL and C