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Have _warpToCurrentIndex() shortcut logic behave properly (#57574)

* Have _warpToCurrentIndex() shortcut logic behave properly

* Add test

* Apply code review

* Fix typo (fromm -> from)
H
Hansol Lee committed
e92afc16b6445611b32fe19795768d16accd2c1d
Parent: 359daf4
Committed by GitHub <noreply@github.com> on 5/20/2020, 8:29:01 PM