CrossAxisAlignment.STRETCH not working with wrapped layout controls
This affects at least ResponsiveRow and Row with wrap=True. Whenever their child controls span to second row, the vertical_alignment=CrossAxisAlignment.STRETCH property stops working.
The underlying problem appears to be that whenever their controls are wrapped, the controls change to Wrap flutter widget. The vertical_alignment for Wrap uses WrapCrossAlignment, which does not support stretch (or baseline) value.
Since this is something missing from Flutter, there probably is no easy fix. Perhaps the Flet controls could be rewritten to not use Wrap, but that may not be a simple task.
In the meanwhile, I think it would be appropriate to document this and/or even print a warning whenever CrossAxisAlignment.STRETCH or CrossAxisAlignment.BASELINE is used with a wrapping control.