https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=4449
--- Comment #1 from Guy Harris <guy@xxxxxxxxxxxx> 2010-03-22 18:04:16 PDT ---
No, it is not necessary.
My guess, from an e-mail thread, is that
1) bringing up the dialog box changes a capture preference
and
2) *any* change to *any* preference, even if it's not a protocol
preference, causes packets to be reprocessed
but I could be wrong.
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