Working hours and Discounts issues

Hello folks!

Thank you for the plugin!

1) I have a photo studio rental spot. Time interval 1 hr, but I have breaks for 15 minutes after each photoshoot.
When I create a schedule for calendar I get into the trouble if I do so:
10:00
11:15
12:30

In this case, system schedules each session for 1:15 at the front-end, so customers getting confused.

2) I tried a workaround to enable hourly breaks feature and add this:
10:00
11:00
11:15
12:15
12:30
13:30

So, then it works fine…but, I got into a problem with the discounts.
In this case system adds each 15 minutes of break for the discount calculation.

So, if you book 10-12:15 then it should be a discount for 2 hours and add extra money into discount (as 15 minutes marked as break, I guess it should not happen.)

Thank you in advance!