Event information not saving on the first time

If we add an event (and all it’s other info – location, date, time, etc.) and click update – then it’ll churn for a while and the event editor pops back up with all of the date location and time information gone (except the description text).

If I fill out the form a SECOND time and hit update – it saves just fine.

All of the plugins we use appear to be up to date – and this is verified across multiple user accounts.

Please advise!

-Paul