The Gesture button was not working for any assigned profile on the original Logi Manager tool, but started working since installing the beta! However, it seems as if the clicks on that button are not registering accurately--sometimes it acts as if I clicked it twice, other times nothing happens at all (on the MX Master 3). And, with the MX Keys, the volume keys, as an example, jumps multiple volume notches whereas before using either device managing app, it worked as expected (one increment at a time). Some of the other FN keys, specifically F3 Mission Control, is also buggy in that it's acting the same way as the Gesture key on the mouse (more often NOT working as expected).