Crashes on every call on El Capitan 10.11.6

I always loved Telephone, but the last 1.2.2 update introduced a problem: Whenever I place an outgoing call, the calls window immediately turns to a „failed call“ even though the actual call goes through in the background. Now I can not terminate the call, since the window stays open, but the red termination window control is inactive. I even managed to get two apparent calls on top of each other - one being connected and having a second ring on top of that with no second window. Only a forced quit of the app is possible at this point to regain control. I rolled back to 1.2.1 and the problem is gone. I will stay with 1.2.1 for now - I hope this gets resolved soon.

cizko76 about Telephone, v1.2.3