I have seen two cases of strange things happening after a revert recently:

(1) was reported on wikitech-l. After a revert of a page that was vandalised to the correct version, references had not been updated [1], [2].
(2} after a revert of a control page for the extension Gadgets, the whole tab for the extension in Special:Preferences disappeared [3].

In both cases a null edit fixed the issues. I suspect 'revert' may be taking some shortcuts it shouldn't take.

en.wp was running a near SVN HEAD version at the time. Betawiki was running SVN HEAD.

[1] http://lists.wikimedia.org/pipermail/wikitech-l/2008-February/036209.html
[2] http://lists.wikimedia.org/pipermail/wikitech-l/2008-February/036210.html
[3] http://translatewiki.net/w/i.php?title=MediaWiki:Gadgets-definition&action=history

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