edit doktor5000: seems the update to 3.14.x will kill the systray icon - currently only known workaround is to downgrade to one of the 3.12.x versions
See the upstream report https://www.dropboxforum.com/hc/en-us/c ... KDE4-Linux
and this post for links to older downloads: viewtopic.php?p=62581#p62581
Before you post any question about dropbox, please have a look if those are not already covered in our excellent wiki page for dropbox: https://wiki.mageia.org/en/Dropbox
Or in the other existing forum threads revolving around dropbox:
viewtopic.php?f=25&t=127
viewtopic.php?f=10&t=219
viewtopic.php?f=7&t=3596
viewtopic.php?f=7&t=3379