I am not sure I understand what you are describing.
Below is a little sample where row 2 and 4 have tall rowheights. It has a button that allows you to remove row 3. In 2.1.0.9, when you remove Row 3, you see the two tall rows adjacent to each other which is what I would expect.
Do you want some other behavior or am I missing your point?
WindowsApplication10_4437.zip