When you add a new session to a webinar series it should match the duration of the previous session

I'm well aware of how to use the scroll to change the time of the webinar.  I'm not happy that I have to do it on every single webinar unless I am scheduling for the same time every day, which I don't typically do.  My problem is that if I schedule a webinar for any length of time other than an hour, the end time has to be adjusted on every single instance as I add them.  Here are screenshots.  I have a webinar scheduled for Tuesday, 9/24, 2PM ET to 2:30PM ET.  I add another session & it automatically sets the date & time, Wednesday, 9/25PM ET 2PM ET to 2:30PM ET.  But I want it at 3PM ET.  When I change the time to 3PM ET, the end time doesn't change to 3:30PM ET, it changes to 4:30PM ET.  So now my meeting is 1:30 long instead of :30.   It doesn't hold the correct length of the session.  It always adds an additional hour.  It doesn't matter if it's a 30 minute or a 45 minute meeting.  It only works correctly if the meeting is 1 hour long.  This needs to be fixed.  I brought up this issue when this was first introduced several years ago & was told it would be fixed.  Clearly it has not been & I have wasted way too much of my time editing the end time of individual sessions.