Killing oneself is not a workaround. I have been left in combat even after reserecting at a keep that was not in combat or even had combat near it.
It would seem, though I could be wrong, this is related to the changes Zos made last year to prevent us from changing skills when we were in combat if we had not taken or given damage for a short duration.
That was a very small issue the worked to stop that caused a much bigger issue that would be easy fix. Considering Zos has not said anything to the contrary and has not pinned this to the Dev Tracker this only reasonable explanation is they do not consider this important.