Custom field of Insight Referenced Object Type is showing only first 25 objects

[Sara Jarekji]

We have created 31 insight objects. 

When I try to select the desired object from the drop-down box it only shows the first 25 objects.

We can search in the field to find all objects based on the name if what we are looking for is not available in the first 25.

But the users are not familiar with the names.

Is there a way to view all the items in the down drop?

Thank you