Hi John,
Thanks! Trying to find out whether this issue is particular to specific Horizon versions, as there might be a completely unrelated change in Horizon 7.8 that might sufficiently affect certain things to prevent the issue from occurring...
As for determining success: as I described, the delay is unrelated to UEM components. So, if you know which Isilon share you'll hit from a particular VM that you're just about to log off from, it should be pretty easy to repro from another VM (accessing the same Isilon share):