AutoHotkey: Ctrl+Shift+M adds blank line instead of triggering function

[mrmech]

I have an AutoHotkey function (Ctrl+Shift+M or ^+m) that has been working fine for several days. For some reason, it stopped triggering my function yesterday and started adding a new blank line instead. I’m pretty sure I accidently activated something because it went from working to not working while I was editing the AHK file in Notepad++.

I think it has something to do with Control Characters because Ctrl+Shift+B types STX and Ctrl+Shift+E types ENQ.

Also, there’s only AHK script running and the trigger is only used once.

Thanks for any help.