Comment # 5 on bug 1021476 from Antoine Belvire

Created attachment 712910 [details]
Patch from upstream

I easily triggered the bug with Nautilus, as previous backtrace shows.

Steps to reproduce:
- Open Nautilus
- Enlarge the window such as there is space left after the last item of the
bookmarks' list in the left panel (i.e. no scrollbar shows up)
- Select the first bookmark
- Press PgDown

I attached here the upstream patch that fix this gtk3 bug and that is present
in GNOME:STABLE:3.20. Please update gtk3 in openSUSE:Leap:42.2:Update.