patch allow to disable ugly arrow in menu button of gnome panel via gconf setting "has_arrow" of menu-button object. Reproducible: Always
Created attachment 206863 [details, diff] patch for any version
Created attachment 206864 [details] gnome-base/gnome-panel-2.28.0-r2.ebuild
this is more fit for an upstream bug report.
Upstream report: https://bugzilla.gnome.org/show_bug.cgi?id=598196 that is probably a dupe of https://bugzilla.gnome.org/show_bug.cgi?id=562247 then, maybe this could be closed as UPSTREAM now
@reporter: Thanks for reporting, but you need to tackle this with upstream. Closing UPSTREAM