Text Hook isn't limited to viewport

[torridgristle]

https://i.imgur.com/RM8Jo7M.png

Text Hook should only get text from the visible area on the screen, including the overscan cropping settings.

[SourMesen]

This is the expected behavior at the moment. Adding the ability to select which portions of the screen should be checked is something I plan to do eventually but it is not currently implemented.