Created attachment 1106065 [details]
Screenshot of problem
Description of problem:
See the attached screenshot. Context menus for the Nautilus side bar can appear under the GNOME Panel when in the right position.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Open Nautilus.
2. Move window to near top of screen.
3. Right-click on a side-bar item.
Menu appears above the right-clicked item, under GNOME Panel.
Menu appears below the clicked item, unobscured.
Thanks for your report. If you want to help with this even further, could you please report this into https://bugzilla.gnome.org/ under gtk+ component (backend: wayland) and link it here? Thanks.
Nevermind, found it at https://bugzilla.gnome.org/show_bug.cgi?id=757476 .
This issue has been closed upstream for nautilus and gtk+ 3.20. It can be closed now.