Bad fonts in webviews


I just upgraded to plasma6 + gear 24.02 +qtwebengine-6.6.2 , and for some reason all webviews (well, I only know of kmail and akregator so far) have terrible fonts, screenshot attached.
Anyone got any ideas? Thanks.
Running Gentoo.

Edit: the screenshot’s compression paradoxically made the fonts look better. But note the thin lines on the ‘e’, choppy ‘K’ in VK…

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