Two firefox windows open

[Fredd]

Hi there,

I recently upgraded to 6.4.1 and now whenever I open Firefox via a bookmark or a search query it opens two windows, one with the requested page and the other just the default page. I've tried reinstalling Firefox and updating the index but the problem persists. Any ideas?

Thanks
Fredd

[JC]

Having this exact same problem. I do think it's a Firefox issue, however, rather than a Launchbar issue (e.g., the same behavior occurs when clicking a link in Mail). Hoping someone knows what's going on, as I haven't found anything in Firefox forums that was helpful.

OP, if you find a solution, please post back.

[Fredd]

You're dead right JC, I noticed exactly the same thing opening the Mail notification to your reply.

[JC]

Hopefully through our respective searches, we can find something. None of the solutions (partial though they were) worked. Like you, full reinstall did not change the behavior either.

[Fredd]

I haven't found anything, looks like we'll just have to wait for Mozilla to fix the problem (if that's what it is).

[Fredd]

Problem is with Adblock Plus: https://adblockplus.org/forum/viewtopic.php?f=1&t=39748