Mortimer Schnerd, RN wrote:
....

My opener has been known to almost completely close, then reverse itself. ...

That's indicative of an adjustment problem or an obstruction -- either
the stroke is a little long or there's a building binding that on
occasion is just enough to trip the force-limiting reversing switch.

An adjustment/cleaning/lubrication should eliminate the
problem...ignoring it will probably just increase the frequency of
events slowly.

--