Notification panel plugin loses qt5 icons on panel restart

Submitted by Nikita Zlobin

Assigned to Xfce Bug Triage

Link to original bug (#15694)

Description

When panel restarts, tray icons, created by qt5 applications, don't appear in notification area. Only application restart solves problem until next panel restart.

I checked following applications (all are affected): keepassx, qsynth, qjackctl, cadence, clementine, vlc

However, starting panel from terminal, I don't get any errors, like in https://bugzilla.xfce.org/show_bug.cgi?id=11522

Version: 4.13.6