When a new all-day event is added in the Scheduler, the all-day slot height is dynamically adjusted. When there are a lot of all-day events, the rest of the week/day view gets hidden. For example, in the Basic Usage Demo if about 15 all-day events are created, the rest of the Scheduler table gets hidden. 

It will be good if there is an option to set a fixed height for the all-day slot and when there are multiple events to make it scrollable for example.