This probably ought to have been included in PR 12534, but better late than never I suppose, since it helps to more clearly demonstrate the bug in a way that a reference-test alone just cannot do.
When writing this unit-test I also noticed that it required a certain amount of "luck" to actually trigger the bug, prior to the patch, since it seems that the bug only reproduced for certain *unfortunate* sequences of TypedArray data. (The added unit-test contains one such, purposely simple, example.)
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