You'll notice
Useful1 Signal0
Multi-line text no longer gets re-measured at a wider width in zero-width layouts.
What's wrong with this entry?
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What
Text layout dropped a special case that re-measured multi-line content at a wider width when the height came out as zero. It now returns the intrinsic measurement directly when the width constraint is zero.
Evidence
wrap-stream
Strings lifted out of the shipped bundle, so the claim above can be checked against them.