Hopefully this is an easy one, but I can't find it. Suddenly I need to double click instead of single on a sketch or feature to see/change the dimensions. Also if I draw one line, I need to give the "line" command again to draw another one. It is not modal anymore. The same goes for dimensions and other sketch entities.

Is there a way to lock the options/settings so they can't change until I unlock them? It seems like once or twice a month "Enable Confirmation Corner" becomes turned off and I have no idea why. "Automatically Load Components Lightweight" inexplicably becomes enabled once in a while too.