Why do Firefox and Thunderbird keep randomly opening new windows?

All Gurus once were Newbies
Forum rules
There are no such things as "stupid" questions. However if you think your question is a bit stupid, then this is the right place for you to post it. Please stick to easy to-the-point questions that you feel people can answer fast. For long and complicated questions prefer the other forums within the support section.
Before you post please read how to get help
Post Reply
strypey
Level 1
Level 1
Posts: 8
Joined: Sun Oct 29, 2017 11:09 pm

Why do Firefox and Thunderbird keep randomly opening new windows?

Post by strypey » Sun Oct 29, 2017 11:24 pm

Hi there. I've been running LMDE 2.0 (EDIT: 64-bit with Cinammon) for a couple of months now, and I love it. However, there is one minor bug that is quite annoying. Every now and then, for no obvious reason, a new Firefox window will open, and at the same time, a new Thunderbird window. It always seems to happen when I'm typing. I can leave the laptop playing music for hours without it happening. Any idea what's causing this and how to fix it?
Last edited by strypey on Fri Nov 17, 2017 3:07 am, edited 2 times in total.

User avatar
Flemur
Level 14
Level 14
Posts: 5338
Joined: Mon Aug 20, 2012 9:41 pm
Location: Potemkin Village

Re: Why do Firefox and Thunderbird keep randomly opening new windows?

Post by Flemur » Mon Oct 30, 2017 11:44 am

Could you pressing "Ctrl+something", e.g. Ctrl+T = new tab, and "something" = the value is for a new window?

And/or, try running/restarting without add-ons: Menu->Help->"Restart with addons disabled."
Please edit your original post title to include [SOLVED] if/when it is solved!
Your data and OS are backed up....right?
Mint 18.3 Xfce/fluxbox/pulse-less
Xubuntu 17.10/fluxbox/pulse-less

strypey
Level 1
Level 1
Posts: 8
Joined: Sun Oct 29, 2017 11:09 pm

Re: Why do Firefox and Thunderbird keep randomly opening new windows?

Post by strypey » Thu Nov 02, 2017 3:41 am

>> Could you pressing "Ctrl+something", e.g. Ctrl+T = new tab, and "something" = the value is for a new window? <<

I don't think so. The Ctrl buttons on this keyboard are in places that are unlikely to be struck by accident, especially in combination with another key (FYI Ctrl+N = new window). It's something that could maybe happen once or twice, as a freak occurrence, but not regularly for months.

>> And/or, try running/restarting without add-ons: Menu->Help->"Restart with addons disabled." <<

The only add-ons I have are uBlock Origin, HTTPS Everywhere, and Privacy Badger. I doubt this is the cause either. I will try it, but even if the bug doesn't recur during that testing time, how will I know whether that's because add-ons are the cause of the bug, or because whatever triggers the bug just wasn't triggered during that test?

User avatar
Moem
Level 14
Level 14
Posts: 5403
Joined: Tue Nov 17, 2015 9:14 am
Location: The Netherlands
Contact:

Re: Why do Firefox and Thunderbird keep randomly opening new windows?

Post by Moem » Thu Nov 02, 2017 3:53 am

If you are using a separate keyboard: can you swap it out?
If not: can you clean it (I recommend compressed air)?
Image

If your issue is solved, kindly indicate that by editing the first post in the topic, and adding [SOLVED] to the title. Thanks!

strypey
Level 1
Level 1
Posts: 8
Joined: Sun Oct 29, 2017 11:09 pm

Re: Why do Firefox and Thunderbird keep randomly opening new windows?

Post by strypey » Fri Nov 03, 2017 1:56 am

FYI it just happened again. The only thing I had my fingers on were the touchpad (I was hovering a finger over the left-click button but definitely didn't depress it). I'm using the built-in keyboard on a 64-bit Fujitsu Lifebook laptop, this link has the full specs (scroll down past the first set of info about the Aspire One)
https://trisquel.info/en/users/strypey

BTW I am not operating in safe mode in this session, so add-ons are still a possible culprit.

strypey
Level 1
Level 1
Posts: 8
Joined: Sun Oct 29, 2017 11:09 pm

Re: Why do Firefox and Thunderbird keep randomly opening new windows?

Post by strypey » Fri Nov 17, 2017 3:06 am

I removed Thunderbird, which stops it from randomly opening pretty effectively ;) See my other topic about the mint metapackage. I recently upgraded to Firefox Quantam (57.0), which was jarring to say the least! The problem hasn't stopped. New Firefox windows still pop up randomly, almost always when I'm reading something in an existing Firefox window, and my fingers are only hovering on the touchpad and its buttons. It never happens when Firefox isn't already open.

User avatar
all41
Level 12
Level 12
Posts: 4058
Joined: Tue Dec 31, 2013 9:12 am
Location: Computer, Car, Cage

Re: Why do Firefox and Thunderbird keep randomly opening new windows?

Post by all41 » Fri Nov 17, 2017 3:29 am

try this.
in FF url window type 'about:config' (without quotes). Enter. Then agree to be careful.
In the search box type 'middle' (no quotes)
Highlight and click to toggle the entry middlemouse.openNewWindow to false
Proud to be a supporter and monthly contributor to Mint.

User avatar
Flemur
Level 14
Level 14
Posts: 5338
Joined: Mon Aug 20, 2012 9:41 pm
Location: Potemkin Village

Re: Why do Firefox and Thunderbird keep randomly opening new windows?

Post by Flemur » Fri Nov 17, 2017 11:09 am

strypey wrote:The problem hasn't stopped.
I had some strange FF behavior (but not about opening windows) which was cured by

Code: Select all

rm -r ~/.cache/mozilla
As far as I know, removing that directory is completely harmless.
Please edit your original post title to include [SOLVED] if/when it is solved!
Your data and OS are backed up....right?
Mint 18.3 Xfce/fluxbox/pulse-less
Xubuntu 17.10/fluxbox/pulse-less

Post Reply

Return to “Newbie Questions”