Its mentioned in the latest Class Rep thread. https://forums.elderscrollsonline.com/en/discussion/456997/class-reps-update-meeting-notes-jan-30-2019

"Stuck in Combat: Unfortunately while ZOS has engineers working on this issue, it’s there and it’s going to be there until they get a handle on the issue. This prompted frustration and contention. ZOS made it clear they do not want to implement “band-aid” fixes and that the in-combat state was a core feature necessary for numerous combat systems. They indicated that they suffer the same bug and are also frustrated with it.

After some pressing, it became clear that getting passionate over the issue is not going to alleviate the situation, fix the bug, or prompt useful discussion. That being said, there are some things that ZOS indicated they are agreeable with to make it such that this super frustrating bug isn’t so destructive. One thing they specifically mentioned was they saw no reason why being in combat ought to prevent the use of the transitus wayshrines. Another possibility that perhaps can be explored is at least being able to change quickslots. I know this is not what anyone was looking for, but it is what it is and if you’re going to play Cyrodiil next update, then I highly suggest you channel your frustrations into useful suggestions that can make PvP playable while being stuck in combat as ZOS indicated that is something that they can do."