Hello!
I'm experiencing something that while possibly not a bug, is less than ideal.
Currently I have a key mapped to toggle /master/fade_to_black. When starting MadMapper it takes three key presses to toggle state. This can also be partially replicated by turning Toggle option in the Control list off then back on; now it takes 2 keypresses to toggle state.
After this initial 3 or 2 keypresses the feature returns to expected behavior 1 keypress toggles state!
This bug happens on a fresh project.
MM v 3.7.4 (1910209977) on macOS 10.14.6