Overriding view with a visual force page removes the related lists
|Knowledge Article Number||000188472|
|Description||Overriding view with a visual force page removes the related lists "Open Activities" and "Activity History".
It is visible with standard UI but not on the visual force page.
|Resolution||Modify all data and view all data permissions will not help in these scenarios. The problem is not even with the page layout.
The profile should have the permission of "relatedto" to the task and events object. This issue occurs only with the visual force page.