Service time going past staff working hours

This has been posted before but here is what fixed it for me.
example a service takes 8hours and staff working hours are 8am-5pm. A customer can still make bookings up until 4:30pm which meant the service didnt finish until 12:30am
the file is found in classes/bookingultra.service.php
i put “new code” after this code just below

//is All Day event?
if($service->service_duration==86400)
{
$time_from = '00:00';
$time_to = '23:59';
}

new code

$hourly = $this->get_hourly_for_staf($staff_id, $day_num_of_week);
if($time_to>$hourly->avail_to)
{
$display_unavailable = 'no';
$is_slot_available = false;
}

$hourly = $this->get_hourly_for_staf($staff_id, $day_num_of_week);
if($time_to<$hourly->avail_from)
{
$display_unavailable = 'no';
$is_slot_available = false;
}

The Devs at booking ultra pro have told me that this problem will be fixed in the next version but I hope this helps in the mean time ??
https://www.ads-software.com/plugins/booking-ultra-pro/