In fact I'd argue that if its possible, what occurred was the exact opposite of a dragon break
Do you think Beth will continue with another Dragon Break in future ES games?
It would be used in the main plot if it did. Example, villain breaks the dragon ala Marukhati and shenanigans occur while you race to put things right.
There is no time in Oblivion? So residents there are permament residents, unless they leave?
Do daedra on Mundus age then?
Forgive the old post, but I think it puts forward a much needed perspective on time and how we perceive it.
What if you entered an Oblivion gate at a point in time that I will call Point X. You exit the Mundus and enter a place that is completely unbound from the Aedric rules called time (among other ones). However, being a creature that was created, designed, and spent all your life to assume that time exists, when it no longer applies to you, you undergo what is euphemistically called in the TES world Mortal Mental Stress. In essence, in order to keep your brain from imploding with the different data coming in, you order it from a beginning to an end. Your mind naturally assumes that having entered a gate into Oblivion, then the next chronological step is exiting a gate from the Mundus. So, your mind orders the events to occur chronologically, effectively becoming your own personal Akatosh, applying only to you until you close the gate and are flung from it back into the Mundus. And because your conception of time is concurrent with Akatosh's rate, you land back at the exact time you think that has passed while in Oblivion. While you were away from the circle, it kept spinning.