Edit: Blarg, I forgot to mention this is a studio only bug. Must of forgot to post it because I said it in the video.
Place I set up: Keyboard Viewer - Roblox
I figured I should write a new bug report rather than bump the old one without all the KeyCodes.
Here are the KeyCodes I found that did not act right.
(Registers on Client > Registers in Studio)
Enum.KeyCode.RightShift > Enum.KeyCode.LeftShift
Enum.KeyCode.RightAlt > Enum.KeyCode.LeftAlt
Enum.KeyCode.RightControl > Enum.KeyCode.LeftControl
Enum.KeyCode.KeypadDivide > Enum.KeyCode.Slash
Enum.KeyCode.KeypadMultiply > Enum.KeyCode.Asterisk
Enum.KeyCode.KeypadMinus > Enum.KeyCode.Minus
Enum.KeyCode.KeypadPlus > Enum.KeyCode.Plus
Enum.KeyCode.KeypadEnter > Enum.KeyCode.Return
Enum.KeyCode.KeypadPeriod > Enum.KeyCode.Delete
Enum.KeyCode.KeypadZero > Enum.KeyCode.Insert
Enum.KeyCode.KeypadOne > Enum.KeyCode.End
Enum.KeyCode.KeypadTwo > Enum.KeyCode.Down
Enum.KeyCode.KeypadThree > Enum.KeyCode.PageDown
Enum.KeyCode.KeypadFour > Enum.KeyCode.Left
Enum.KeyCode.KeypadFive > Enum.KeyCode.Unknown
Enum.KeyCode.KeypadSix > Enum.KeyCode.Right
Enum.KeyCode.KeypadSeven > Enum.KeyCode.Home
Enum.KeyCode.KeypadEight > Enum.KeyCode.Up
Enum.KeyCode.KeypadNine > Enum.KeyCode.PageDown