Try this:
1) Create new patch
2) Make a comment with this text: (foo)
3) Click <ctrl-f> and type this in the entry widget: foo
No match.
4) Create a message box with this text: (foo)
5) Click <ctrl-f> and type this in the entry widget: foo
Match.
This manifests itself in other cases, too-- I'll get search
results with the search-plugin but if I open the patch and
do <ctrl-f> for the search term I won't get any results
because the term happens to be in a comment, up against
a parenthesis.
If someone can confirm I'll post on the bug tracker.
-Jonathan