They should not get stuck. I assume you designated a reasonable patrol route up and down the ride path. (Does your path turn back on itself or is it straight? If it turns back the entertainer might be trying to jump the path fences. - I don't know, just a thought.)

My advice though would be to shorten the ride path and to use TV screens on it. I think it is more advantageous (I stand to be corrected as this is just my observation) to have your peeps move on to another ride if the queue is full than to wait a long time in a queue. On scenarios with already built rides with long queue paths I always straighten and shorten the paths.

Oh my path snakes back and forth and I do have TVs also.

I've found it's not too bad of an issue, he kind of fixes himself.