After update to internal testing of Deepin V23 I noticed that some third party applications like redshift-gtk ot radiotray-ng stopped to show in the right part of the dock ( task bar or whatever you want to call it).
To reproduce the issue install redshift-gtk
sudo apt install redshift-gtk
and run it.
Normally the icon appears in dock to give the possibility to control the app. But after internal testing updates any other icons but system ones do not show in the dock on the right panel.
中文 
After update to internal testing of Deepin V23 I noticed that some third party applications like redshift-gtk ot radiotray-ng stopped to show in the right part of the dock ( task bar or whatever you want to call it).
To reproduce the issue install redshift-gtk
sudo apt install redshift-gtk
and run it.
Normally the icon appears in dock to give the possibility to control the app. But after internal testing updates any other icons but system ones do not show in the dock on the right panel.