Preview in a popup eats CPU

[0x7CFE]

Description

tldr: when preview is opened in a popup window its process is constantly eating CPU, even when everything is completely idle. According to Firefox Process Manager, Typst tab constantly consumes 3-10% of CPU.

When I switch to integrated view, consumption drops to 0.04% or so on average:

Firefox 138.0.1 (64-bit)
Ubuntu 24.04.2 LTS

Reproduction URL

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Browsers

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OS

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