As it says; after assigning one or more fields to a dynamic search in a grid the user cannot CLEAR the fields at runtime.
Unless that’s by design or a feature?
On my version 9.0.026 this is working like it should. I hit the ‘clear’ button and tap the ‘search’ button to apply to get the record with no search applied. Beware that you have to use the ‘search’ button after clearing the searchfields. This has always been like this