Steps to reproduce:
1. Add a new event. On Recordings->Events->"Add Event"->Processing, make sure "External External" is selected
2. Wait until event is published
3. Do a mouse-over on the respective row on column Published in table Recordings->Events->Table
The publication is listed as "Custom"
The publication should be listed by its label as defined in /etc/listproviders/publication.channel.labels.properties
Workaround (if any):