Array.LastRowIndex: Bug or hidden feature?

I was cut and pasting some code and without thinking went from:

i = MyListboxName.LastRowIndex


i = MyArrayName.LastRowIndex

It compiled, ran and returned the correct value. I’m not going to rely on it but I thought it was interesting.

That was deprecated in Xojo 2020r2 according to the old docs site:

Ah yes, the old vs. new documentation thing.