Coverage panel has become excruciatingly slow in past few releases

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Leon Sorokin

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Jan 29, 2026, 1:11:29 PMJan 29
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Try reloading this demo with coverage recording enabled:


I get UI hangs and angry laptop fans spinning for 10+ seconds at a time. The filter input freezes with every entered character.

Is it just me or can someone else repro?

I'm on on Arch linux KDE/Plasma. Tried Chrome, Chromium, Stable, Beta, Unstable. They all seem to have this issue. A few months ago everything was okay.

thanks!

Simon Zünd

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Jan 29, 2026, 2:36:43 PMJan 29
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Thanks for the report, I filed a bug here https://crbug.com/479855266.

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Sean Dinwiddie

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Jan 30, 2026, 9:21:19 AMJan 30
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OH MY GOLLY

Same ugh!




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