> I still think the problem is in markers dropping to 'point-min'.

Due to the buffer erasing part when reverting the buffer.

 > Shouldn't a marker remember its previous position as a number
 > and try to restore it when this position becomes available again?

I think that Stefan's approach to restore windows' point markers does
that in a more sophisticated way.  I'll attach a patch.

But that patch does not address window configurations and states -
simply because it can't access them.  We need a different solution for
those.  And it obviously does not handle non-default reverters like
'dired'.

martin