A while ago I was experimenting, trying to see if i could get navigation items to animate and scroll between each other.
I don\'t know if this is related but suddenl
One reason this keeps happening to me is I use a VNC viewer to remotely work on my Mac mini, and it defaults to sending repeated keypresses whenever any key (including shift) is held down.
So even though "I" am not pressing shift multiple times, if I use the physical keyboard to enter text, then just holding shift down long enough to type a few letters results in the Mac seeing it multiple times and toggling the slow animations.
One work around is to not use the physical keyboard, but instead always "type" using the mouse to select letters on the simulators pop-up keyboard.