Systray icon not showing in KDE Plasma 5.2

[Ruben B.1]

KDE Plasma 5 dropped support for the ancient systray icon protocol xembed, which Dropbox appears to be relying on.

Would it be possible to upgrade to a newer, still working solution for the Linux systray? As more distributions upgrade to Plasma 5, things will only get worse. Thanks!

Reference:
My bug KDE Plasma bug report: https://bugs.kde.org/show_bug.cgi?id=344620
The blog post explaining solutions therein: http://blog.martin-graesslin.com/blog/2014/06/where-are-my-systray-icons/

My system:
Arch Linux 64-bit, KDE Plasma 5.2, Dropbox 3.2.6
http://blog.martin-graesslin.com/blog/2014/06/where-are-my-systray-icons/

[Edward O.]

This is the same issue discussed in https://www.dropboxforum.com/hc/communities/public/questions/201896285-Top-bar-tray-icon-missing-Fed... - some potential incompatibilities & workarounds are discussed there (though nothing worked for me yet).

[Nick C.2]

I am seeing this on Fedora 22 as well. I have tried the Dropbox 3.6.x stable and 3.7 unstable (which is worse as it reports incompatible QT).

[Rafa P.]

This problem is present on kubuntu 15.04... the sistray icon is not working because of plasma 5 I guess. It would be great if you could fix that.

[pa w.]

I'm using Kubuntu 15.04 and also affected by this bug.

https://bugs.launchpad.net/ubuntu/+source/dropbox/+bug/1448611

[Chandra C.]

I am on Kubuntu 15.04 and can report the same: Dropbox icon is missing from systray.

[Patrizio B.1]

Same here on Ubuntu 15.04 with KDE.

[Hermann H.1]

Same here (openSUSE Tumbleweed KDE Plasma 5)

[Fabien P.1]

Same here (Fedora 22 KDE Plasma 5)

[Nick C.2]

See new builds e.g. https://www.dropboxforum.com/hc/en-us/community/posts/204562695-Experimental-Build-3-9-32 and workaround suggested by Nicholas O which works fine for me on Fedora 22 KDE Plasma 5