Object Explorer tab | add a Filter (schema) as 'Equals' | if it contains Capital letters, it does not work.
When the Search String contains an upper case character, and the Search Condition is "Equals", and the Case Sensitive property is set to False, the filter selects nothing (it's empty).
Key in Search String in lower case for now. When case is insensitive, *_BOTH_* sides of the equation must be forced in the same direction (upper or lower, your choice).
Waiting for fix in a future release of Toad Data Point.