Until a few days ago i could use S to go to the Select option, and Q to go to the measure option. Now S will still take me to the Select option and Q will mark a turning point when measuring, but Q will not switch me to the measure tool if I'm on select. I use S and Q to switch between these two options a lot and I can't seem to find out what has replaced Q as the keybind for the measure tool. I even ended up buying a new keyboard thinking the key had broken, fortunately not an expensive one.