When you resize the "Choose a storyboard frame" window increasing the vertical size, the part that has the frames stay with the same size. It should show more frames... (build 243)

Yves had fixed it in MMF 1.5, but the problem is back again.

It would also be nice if when you edit one "Jump to Frame" action, the window shows the selected frame, so you don't have to scroll down to find it.