Reject a new event

I try to add a new event. I enter the same date in the two date boxes. I get a note that states – Events cannot start after they end.

I had this problem previously and then someone from the forum wrote to me that they had this problem in their sights and would try to fix. They appeared to do so since I made a number of new additions. However now it has reverted back to this problem.

I hope someone still working to fix this problem