As reported in bug 17592 comment 46 and bug 17592 comment 48, GTK+3 apps using xembed-sni-proxy have their status icon being non-responsive.
See also https://bugs.kde.org/show_bug.cgi?id=362941
It seems that upstream has a pretty low interest in this bug.
Should be fixed with the upstream patch in plasma-workspace-5.8.6-7.mga6. Let's check and report back upstream before closing our bug report.
FYI, 5.8.6-7 doesn't fix the problem on my test machine. The status icon remains unclickable (if I disable SNI, of course).
Readding comment #3 from 07-04-17 22:26, because it got lost when the old DB was restored.
--- Comment #3 from Nicolas Lécureuil ---
Some news about this ?