nodirectwrite is supposed to fall back to the gdi backend. Whereas all of the unix based Qts use the freetype one.
I am just not sure how well tested the freetype backend is on Windows.
As for limiting to Qt versions, the bug has existed since 6.3 timeframes and even possibly before that. Perhaps limit the change to all Qt6 versions for now, maybe up to 6.8.0? We can then revist that for any follow-on releases.
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