[Bug 1959747]

[Completelyrandom+github]

Presently running Thunderbird 128.6.0esr (64-bit) on a Fedora 41
installation, on top of Gnome 47 / Wayland. Different (quite more
modern) hardware than with my previous report #17.

I am still seeing quite heavy CPU load spiking across all 16 cores when
moving the mouse cursor along the e-mail list. For me, the issue seems
to persist.

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https://bugs.launchpad.net/bugs/1959747

Title:
  [upstream] Very high CPU and slow responsiveness in Thunderbird 91-102

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