Fixed search field with a scrollable list when opening a very long one

I have some custom nodes that have very long lists of available values like styles for example.
When the list is pretty big, we can't see the search field as it seems to open from the bottom, and there's no scroll cursor to get to the top of the list quickly :/

So if the list was opening at the top by default to have search field viewable, or if the seach field was fixed and independant with a scrollable list above it with a cursor it would be way easier to find the value we want.