Remember previous height of Dropdown Menu edit window

[RobBarrett]

Often when working with the Dropdown Control effect, I'll have more options than can be shown in the default height of the Dropdown Menu edit window. I can of course resize that window to be taller, to show more options. However, if I were to close and later re-open this (or any other) edit window, it reverts to the default height, meaning that I have to repeatedly resize it to be able to work efficiently.

It would be helpful if the previously set height of this window is remembered, and used when next opened.