I can’t seem to get the latest update (“Modo-Me_2.82.v1.55_05042020_2.zip”) to disable the gizmo. I assume based on the “_2” in the name it includes the git merge accident you indicated, and I downloaded the file on the 7th from Gumroad. I’ve tested uninstalling and reinstalling it multiple times, and 1.54 works fine if I reinstall that.
My repro steps are to disable the always-on gizmo, be in Move mode, change Modo-Me to “Automatic” mode, then switch to Selection mode. The gizmo shows up there even though I don’t want it to be. I can even disable them in the gizmos pull-down of the viewport and MM re-enables them.