Thanks for all your help both of you

I was just hoping that by installing the upgrade the occasional failures of flows stalling will stop.  It doesn't happen often but about 2 - 3 times a week I will have a request, either created manually or from a scheduled job fail.  

It triggers an Glide record invalid on the Request record and I detect it because the short description field on the request is blank.  Running a "test" on that flow retriggers it with no failure.

It sometimes happens on daily scheduled job where it works just fine 6 out of 7 days in a row and then 1 fails....

Frustrating because it's not consistent and its not the same flow each time.  Random

That is why I was hoping a patch install would fix this or upgrade to the workflow studio would fix it but I will wait for the upgrade to Yokohama Patch 5 next month to see if I can install it then.

If not I will follow your advice and open a support ticket!