Feature request: collapse stacks in drop-down list on note panel

[FactMan 196]

I have one stack that contains a lot of notebooks that I don't normally file things in. However, in the note panel (Ctrl-F11) there is a drop-down list for changing the notebook of the current notebook. Unfortunately, the stack is always expanded so that my "favorite" notebook is sometimes listed at the bottom. The Recent listing is a great addition, but the usability of this menu is limited by this missing feature. It also applies on individual notes, and the move to notebook option when you select multiple notes.

 

TIA if anything can be done about this.