In previous version, when all icons in systray were displayed, they were aligned right next to clock. In plasma 5.7 there is blank space (probably replacing "show hidden" arrow). Reproducible: Always
Created attachment 100080 [details] Packed systray with "show hidden" arrow
Created attachment 100081 [details] Unpacked systray with blank space
I can confirm this bug on Antergos (Arch-based) running plasma 5.7.2.
Created attachment 100475 [details] problem Same problem in KaOS, (i have tested kde neon, kubuntu, antergos have the same bug)
Git commit cd19257085e89015b6ca38e255d555c613b21527 by Kai Uwe Broulik. Committed on 10/08/2016 at 09:49. Pushed by broulik into branch 'Plasma/5.7'. [System Tray] Don't reserve space for expander if it's not visible If all system tray icons are visible the arrow would hide but the reserved space for the system tray would not change leavnig a gap. FIXED-IN: 5.7.4 Differential Revision: https://phabricator.kde.org/D2387 M +4 -4 applets/systemtray/package/contents/ui/main.qml http://commits.kde.org/plasma-workspace/cd19257085e89015b6ca38e255d555c613b21527