OSX -Matinee Recording, Window can't be closed

Andrew, thank you, force start position is useful.
I still consider “Window can’t be closed” as a bug. On my Mac the tilde is alt-n and does not close the window.
“Simply bring up the console command window (~) and type ‘Quit.’” might be fine from a programmer’s perspective, but not for a user who plays with the Unreal Engine and suddenly has a blocking window and can’t move the mouse outside this window. The window close buttons are not reachable in this mode.

There is a great turorial for Matinee:

The track defaults to 5 seconds. I would recommend that Create Movie only records this actual length and does not record forever.
Hope this makes sense. From a user experience those things are ‘expected behaviour’.
Thank you for your time, I also invest mine to make this amazing engine even better.