Not possible to search anything on Firefox

Starting today, I can no longer search on Firefox.
As soon as I type a word into the search bar, a page appears:
“3opus, the tab has crashed: we can help you,” with the option to close the tab or restore it.
If I close it and open a new tab, then type in my search, I get the same message or Firefox closes.
If I choose to restore the tab, my new search query brings up the same message.
If, instead of typing a search, I click on a bookmark, there is no problem.

Below is a truncated version of the error message.

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It sounds like a 3rd party extension is interfering with your Firefox. Did you already perform the basic troubleshooting steps?

@hui

A third-party extension?
It’s been four months since I added uBlock to block unwanted tracking and pop-up ads.
I haven’t added any other extensions.

I wasn’t aware of this Mozilla support forum because I’ve never needed it.
I’ll see if I can find anything there.

@hui

I have used troubleshoot mode : the extension is not the problem.
I’ll follow the rest of the steps outlined by Mozilla and let you know how it goes. But not until tomorrow.

I’ve had many firefox tab crashes since updating tumbleweed this morning and many don’t involve any search. Some that crash every time a page loads: FedEx tracking, Ebay home page, USPS tracking https://tools.usps.com/tracking/

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Me too, since the last dup to the 20260605 snapshot. ‘Gah. Your tab just crashed.’ is the message.

Try reverting fontconfig and libfontconfig1 to 2.17.1, there seems to be a bug in FF in combination with fontconfig 2.18.0 that will be solved in the next FF release.
You can find the older fontconfigs in one of the history snapshots

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Downgrading those 2 packages fixed it for me so far no crashes. Thanks!

Good catch, fixed here as well.
(only duckduckgo searches crashed here, other options worked)

Refresh Firefox (Help,More troubleshooting information) and then Refresh FIreFox
did fixed it for me

@OrsoBruno and @swannema

Downgrading works !
All is good now.

Thanks

Refresh Firefox didn’t work for me. But now I seem to have lost all my bookmarked tabs. ;-(

How do I downgrade? Can someone point me in the right direction. I’m running Tumbleweed.

sudo zypper in --oldpackage https://download.opensuse.org/history/20260603/tumbleweed/repo/oss/x86_64/{fontconfig,libfontconfig1}-2.17.1-1.2.x86_64.rpm


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There’s an issue with fontconfig 2.18.0 → <Broken fonts after June 6, 2026 zypper dup> and –
this Bug Report: <fontconfig 2.18 ignored (replaced to Noto) all 3rd-party fonts Arial Tahoma Calibri DS-Digital>


The Bug Report mentions the DuckDuckGo Mozilla Firefox issue – I’ve simply changed my Firefox Search Engine to “Ecosia” and will wait until the dust settles … :roll_eyes:

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@swannema Thanks for the link, I was struggling to find that old fontconfig.
More power.

Great. Thanks very much. It works again!

BTW, this morning Firefox tabs crashed when I opened specific CNN and CNBC and “Huffington Post” news items in new tabs.

  • In other words, it ain’t only a Search Engine which is causing the Firefox crashes – it’s also specific News Services.
    To date I’ve only experienced this issue with US American News Services – haven’t tried any other countries yet …

Refresh creates a backup dir. (Old Firefox Data)
All your data before the refresh in there.

I don’t know if it was the new Firefox or the new fontconfig, but with TW20260609 we can remove the lock on fontconfig and upgrade (and DuckDuck goes searching again).

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