[Evolution] Unknown background processes

[Dr Dave Mason <dave davemason com>]

Good day,

I frequently see an "unknown backgound process" message displayed in the
status bar. Sometimes in multiple instances (shows up multiple items
simultaneously in the status bar next to each other) It does not keep
evolution from working, but once displayed requires a shutdown to stop
it. Upon reloading everything is fine, until it appears again.

Bunsenlabs Hydrogen, Evolution 3.12.9

Thanks for any help.

Dave