You can see this issue on the telerik demo page here:
Set the minutes per row to 15 (or lower) and alter the breakfast appointment to be from 6:00 am to 10:00 pm.
Change the view to 24 hour view.
Notice the blue box representing the appointment is drawn correctly up to the 6:00 PM line but there is still the "bottom line" of the box at the 10:00 pm mark but the gap between 6:00 pm and 10:00pm appears blank as if the breakfast appointment does not extend all the way until 10:00 pm.
Since it appears on the demo site i am assuming that this is a known bug. I have tried various search terms here in the forums but I cannot seem to find a reference to this bug or a solution.
If you choose to set minutes per row to 10 minutes the display issue gets worse as the appointment gets cut off at 2 pm. So it appears that an appointment can only have a maximum number of lines drawn.
Another way to demonstrate the bug is to un-check "All-Day Row" and then change the minutes per row value and notice how the "all-day" appointment is drawn, any value under 30 minutes causes a problem.
Any way around this? Is the fix in the next release?
This has confused and annoyed a lot of my users as they recently requested 15 minute timeslots and now their long time blocks are not visually useful.
Any help or a point toward a post already dealing with this is greatly appreciated
Thanks all!