Something missing from Start10 from my Windows 7 menu is the automatic height adjusting that happens when you have lots of pinned shortcuts. I can't see more than 14 with Modern Style, or 17.5 with Windows 7 Style. The new Windows 10 start menu lets you manually resize the width and height; that would work too if possible.
I typically have an average of 24 or more shortcuts pinned to the start menu. If this is a bug, then please fix, otherwise could I make this a feature request please?