Fix error from popover scroll hook #69479
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stokesman
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[Type] Bug
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Size Change: +10 B (0%) Total Size: 1.84 MB
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Flaky tests detected in 954709d. 🔍 Workflow run URL: https://github.com/WordPress/gutenberg/actions/runs/13703098421
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What, why & how
Follow up to #68075 which fixed the ability to scroll “through” popovers but also introduced this error. The error wasn’t there in 6.7 (despite the feature being broken) so I’ve added the label for backporting to 6.8.
A simple fix to avoid errors logged in the console. This makes the
usePopoverScrollhook return null in case itscontentRefparameter is falsy.Testing Instructions
Demonstration of errors this fixes
popover-wheel-errors.mp4
Note about potential redundant execution
The instances that surface this error are curious because
usePopoverScrollis being called byBlockPopoverwhich is being rendered into a slot that already callsusePopoverScroll. This creates the potential to add twowheelevent listeners. Currently that doesn’t happen because__unstableContentRefisn’t provided (and that’s why it errors currently). This doesn’t seem too concerning anyway since even if the "wheel" listener were doubled up it would probably just make scrolling "through" the popover go twice as fast. It’s also unlikely that first-party popovers such as these will ever be providing__unstableContentRefand the publicBlockPopoverdoesn’t support that prop. I’m noting this because it feels a little haphazard. There are various ways that we could safeguard against this but I decided against proposing anything more than this minimal change for now.