When I filter the mail, for create a virtual folder for example, I think that the possibilty to see the if mail is flag or not can be usefull like see a word in subject or in body. I've observed (by experiment and using this guide http://www.eyrich-net.org/mozilla/X-Mozilla-Status.html?en ), that a mail can be filtered like flagged if his status end whit 0005 Personally I've created a condition, where X-Mozilla-Status End whit 0005 ^Added^ However I've observed "End whit 0005" only by experiment and I don't know exacly how it works.. Hoping that this first report can be usefull, Thank's for TB, FF, and so on.. Riccardo Fallini

I could not find an earlier instance of this same bug, but I could have missed it.

Ah -- the reason I couldn't find it is, it's been fixed. You have to Search or Filter the Status header. Not in TB 1.0, but in nightly builds and will be in the next release, presumably. *** This bug has been marked as a duplicate of 272709 ***