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Firefox freezing up

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Firefox recently started freezing up on various websites. I thought the move to Rust was supposed to make Firefox more reliable, but in fact if one tab has problems with JavaScript, then the ENTIRE Firefox app freezes up.

Firefox 87, Windows 10.

Example triggering website for my machine:

https://www.pcmag.com/how-to/no-kindle-needed-10-free-ebook-reader-apps-for-your-phone-or-tablet

Firefox recently started freezing up on various websites. I thought the move to Rust was supposed to make Firefox more reliable, but in fact if one tab has problems with JavaScript, then the ENTIRE Firefox app freezes up. Firefox 87, Windows 10. Example triggering website for my machine: https://www.pcmag.com/how-to/no-kindle-needed-10-free-ebook-reader-apps-for-your-phone-or-tablet