Issues reported on mobile devices (non-flagship
phone models or non-16:9 screens) that seem to
be because formspec size doesn't fit on screen so
tab buttons don't respond.
Rename the "movement" tab to "motion" even
though it's not a perfect synonym, to make it fit
inside the button better.
Described in player guide "movement" tab.
It's analogous to the old "/stuck" command that
was removed once long ago, but much more
tedious to execute, so players still have an
incentive to extricate themselves manually.
