The old Draggable video had a mistake in it, we've since uploaded a newer version that's been corrected. Thanks for catching that @gspencergoog!
- [na] I read the [Tree Hygiene] wiki page, which explains my responsibilities.
- [na] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement].
- [na] I listed at least one issue that this PR fixes in the description above.
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- [na] All existing and new tests are passing.