Quote Originally Posted by BaronOfHell View Post
How about once the ruler is no more, a process to make a new heir into a regent starts. If the former ruler is resurrected before the process has finished, the former ruler retains their rule. If a new ruler is named however, the new ruler stays.

Similar to how a country can only be without a government for a limited amount of time, that time period in this example could be the period from when those in power learn about the demise of the previous ruler, to the new ruler is proclaimed.

Of course previous examples where it is not proclaimed to the relevant people that the ruler is no more, to extend the time period to resurrect, is an issue. But it is no different than from the issue of the puppet king, a true ruler from behind the shadows.
So in my opinion it is a completely different issue than that of old rulers not remaining rulers upon resurrection.
The Oglaf's comic covered it. (No, not going to link)
Essentially, the new ruler is the new ruler, after completing all the coronation steps. Turning back from life is the same as abdicating and later saying you want it back. Doesn't fly well.