When creating a recurring event in Events+, when it comes to entering the event Duration.
the input is in hh:mm so 01:30 hrs for example for 1.5hrs
But then when you edit each recurring instance, the minutes aren't taken into consideration.
in older version we entered 1.5 to mean 1hr 30 mins, but with the new version, it's based on hh:mm
So, if you set duration to say 01:30 to mean 1hr 30 mins duration, then check each instance. you will see the duration is 1hr, not 1hr 30.