two firefox windows are opened when clicking on external link in catalina macOS

Since upgrading to catalina macOS, firefox has the following annoying property. If I click on a link outside of firefox (e.g. in a mail message), two firefox windows are always opened. The first one is blank while the second one contains the webpage of the link. I would really like to avoid the extra firefox window. Has anyone else encountered this problem and if so, is there a fix?

iMac Line (2012 and Later)

Posted on Nov 8, 2019 1:04 AM

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29 replies

Dec 2, 2019 11:52 AM in response to dialabrain

From Bugzilla..... looks like it's been fixed in future versions yet to be released ... -Blake


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Florencia Di Ciocco changed Bug 1600153 at 2019-12-02 09:42:21 PST:


Comment # 2 on Bug 1600153 from Florencia Di Ciocco at 2019-12-02 09:42:21 PST

Hi Blake,

Thanks so much for the details. I was able to reproduce this bug on Mac Catalina on Release 70.0 (64-bit) but not on Nightly 72.0a1 (2019-12-02) (64-bit) nor Beta 71.0 (64-bit). Which means that this bug has already been resolved and it will eventually work on future Firefox Release versions.

Firefox Nightly is made by codes and fixes made by Mozilla developers, that are compiled into a common code repository (Mozilla-central) to create a pre-release version of Firefox for testing purposes. After the code on Nightly matures, it is merged into stabilization repositories (Beta, ESR and Dev Edition) where that code will be polished until reaching the final version of Firefox (Release).

I leave you the link with the Firefox Release Calendar (https://wiki.mozilla.org/Release_Management/Calendar). When Release reaches Beta's (tomorrow) actual version (71) you will no longer encounter the problem.

I’ll mark this ticket as resolved since once the natural cycle is complete you won't have this bug; but feel free to reopen it if you experience this behaviour in the future once the migration to Release has been made.

Best regards, Flor.


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two firefox windows are opened when clicking on external link in catalina macOS

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