I can confirm this too with version 0.0.26 (and using DB)
The message "Beim Öffnen der Details ist ein Fehler aufgetreten" is displayed when trying to open the details for a connection.

Btw. i like the new busy indications

@ NightShift79, may i use your nice icon to create one for faenza icon set? because this is the set i'm using at the moment...