Panes behavior - open on click

[elorup]

I have a lower screen resolution and use the Auto Hide with Item Attributes and Item Notes.

But whenever I move my mouse cursor to the scrollbar of an item, I move a bit too much to the right side and either Item Attributes or Notes slides in.

Is there a way to make the panes 'open on click' similar to the Bookmarks and Pages in Adobe Acrobat?

Regards
Eric