This issue did begin on Tuesday. Don’t think it happened on my 2 alts I ran today for dailies. I run multiple 60s: dk, dh, hunter, and priest classes.
There was a tip in here to not be mounted when using the flight master, think that helps though I don’t think this issue is fixed. I did reset my UI/reinstall my addons again for patch on Wednesday. I believe it is an outstanding bug. Every day with an exception of today have been dc’ed at some point after flight path landing. Only behavior I have changed is trying to be sure to not be mounted when taking a flight path until there is a fix announced.