2061877 - High CPU usage and freezing on science.org and pnas.org

Status: UNCONFIRMED

(Core :: Performance: Responsiveness, defect)

Description

[Joe [:Joey]]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:153.0) Gecko/20100101 Firefox/153.0

Steps to reproduce:

Asked on https://support.mozilla.org/en-US/questions/1597171 where the issue was confirmed

Sample articles to test:

https://www.science.org/doi/10.1126/science.aeb1157

https://www.pnas.org/doi/full/10.1073/pnas.2607754123

Actual results:

High (99%) CPU usage, freezing, extremely slow loading

A kind contributor on Mozilla Support also provided: https://share.firefox.dev/4xmsya0

Expected results:

Should be quick as on e.g. Edge

This is a recent change that is seemingly unrelated to the Firefox version - see here: https://support.mozilla.org/en-US/questions/1597171

Possible culprit is integration of GetFTR on some journal websites

Comment 1

[BugBot [:suhaib / :marco]]

The Bugbug bot thinks this bug should belong to the 'Core::Performance: General' component, but is not confident enough to move the bug to that component.