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We took a late fix for handling of vertically stacked monitors with gnome-shell into 7.0. This change is causing menus of qt applications to be mispositioned.

See https://bugzilla.gnome.org/show_bug.cgi?id=730527

Florian is work on a fix. Fixing this entirely may require changes to both gnome-shell and nautilus.

(In reply to Matthias Clasen from comment #1)
> Florian is working on a fix. Fixing this entirely may require changes to both
> gnome-shell and nautilus.

I'm still testing (and need to write a proper commit message), but I'm cautiously optimistic that a single (and simple) mutter patch fixes all issues sufficiently well.
(apparently we were wrong about nautilus using the primary monitor, so there is no issue with system chrome overlaying desktop icons - I don't think the current behavior is right and will address it upstream, but I don't think it is an urgent problem we need to address in RHEL)

The more important patches apply to mutter, so reassigning; I'll use bug 1075240 for the gnome-shell bits.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHSA-2015-0535.html