Please find attached Event File logs, Same Symptoms, Fighting Blazes in the Nether and now cannot connect to Realm.
Additional feedback: No Realm Admin interface to reset a players location or player file. We are now stuck waiting on a fix unable to connect to the realm at all.
I have received a response after 7 days! from help.mojang which is "Reset your realm". I find the response time and answer unacceptable, I've asked some follow up questions and hopefully I wont have to wait a week for another response.