My guess is that it's a caching issue, some kind of lack of
synchronization
between perhaps a WikiContext, ReferenceManager or some place that
keeps
page information and the updating of the comments following an
edit. If you
followed a comment through the entire process of user entry to
being stored
in the provider it would seem somewhere along that chain something is
remaining from a previous edit. I wonder if this (a) still happens
when
caching is turned off, and (b) if it's influenced by choice of
provider.
Note that if you watch the page history, that gives you the right
results. So I don't still quite understand how one place can give
you the right results; one gives you the wrong one.
/Janne