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Platform Development • Re: The browser hang with 0 CPU load.

Pale Moon forum - Forum index [Unofficial] April 29, 2026
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I have managed to reproduce the issue, but it's worth reiterating that it requires a fairly specific setup:

I came across a link that reproduces the hang with 100% confidence for me. Here it is: https://www.tiktok.com/@moments3641/vid ... 2882901270 Reproduced the first time you launch the browser on a clean profile.

In my testing, it requires this exact setup. Create a new profile, go to that link. If you have launched the profile even once before, you will not be able to reproduce. Even if it crashes on first launch and you relaunch with the same profile, everything will just work the second time around. You have to use a previously unused profile to hit the issue again. In my local builds, I just deleted the obj*/tmp/scratch-user folder over and over and this was reproduceable if I remember to do that. It also seems to hit harder on a 32-bit build, though I was able to get the 64-bit one to freeze with this exact setup.

Yes, I know the OP mentioned it... but it's easy to miss if you're skim reading. I wasn't able to reproduce until I did it in this exact way. Tried once or twice before noticing the words I just bolded. That seems to hint at something that's not setup yet in a new profile causing a hard crash, actually. At least for this specific link.


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