I'm glad this beta allowed ctrl to be added as a keyboard shortcut. I have a Windows 10 PC and a Macbook Pro with macOS Big Sur v11.5.2. My end goal is to use flow between the two with the "ctrl move to edge" setting. I wanted to have ctrl be assigned as the "Keyboard Shortcut" so that when I hold the gesture button and move to the edge it will switch. It seems to be working when I go from PC to Mac, but it is not working when moving from Mac to PC. It does, however, work when I hold the Mac's ctrl on the keyboard and move from Mac to PC (this shows that the functionality works). This may be an issue with the way ctrl is held with the gesture button but hoping this can be fixed.