rendering of event drag time

Hi,

I am having an issue with dragging the event endtime and it rendering in the scheduler. When I have an event and I click to drag the time line to extend the end_time it renders correctly. When the scheduler is refreshed the event displays the correct time in the header but its not rendering the size of the event to show the entire blocked out time line. How do if fix this?

Before:


After:


Can you provide some sample where issue can be reconstructed?
( there was not similar error report in past )

If you can’t provide full sample - full js init code will be enough
Most possible it is some kind of conflict with blocking extension.