This is just an observation. I'm running Musescore 3.5 Beta in Windows 10. I entered a shortcut of "Numeric +" for "Increase Playback Speed". The shortcut worked as expected, however; an attempt to execute a tie by using the "Numeric +" failed. I guess I should have remembered that I had always used the "Numeric +" to execute ties. There was no warning in the Shortcuts menu item that "Numeric +" was already being used. BTW: The "tie" icon still works fine. Again, this is just an observation. Thanks much for this great software.