I was spotted by some enemy in the Reach and the "in combat" persisted for many minutes, long in both time and distance after I should have evaded the threat. I chose to die to a cliff and a bear to break out of it.
I'm on NA Xbox and I've had problems with this sporadically for a few days at least (again). It seems that the game is not bringing me out of fights/out of combat nearly as quickly as it used to. This happens even if I'm just running on foot or on my mount and am detected by an enemy. Several times this week I could be a few to several seconds away from whatever NPC enemy detected me and still cannot get on a mount. Sometimes this "stuck in combat" issue lingers for I'm guessing up to 30-seconds. It feels like a really really long time when playing the game. This is in PVP or PVE.