Hi Benoit,
Maybe I am missing something. I recognize that what you are
saying is true, but I am having difficulty understanding why it is
a problem ...
Why not use the "Application" recording selection, then use
the mouse left-click-and-drag to size the window as you want it (by
dragging the recording window "handles"), then use the "Window"
selector and click "Snap to fit" (to the custom size...)?
That should allow you to keep the "Rerecord" option, while
still retaining control over the size of your recording window.
But like I said, I may be missing something, so let me know
why that won't work for you. Have a nice day!
.