Filter on a large object list within Manager does not display

Hi Community,

I created a new DialogGroup for a special usecase.

Beside other tasks, GroupMemebers schould be able to assign QERResources to a Person using the Manager-Tool.


I added permissions to use the Launchpad- and Manager-Tool, forms, menu items, TableGroupRights...

Almost everything works as expected, but when a large list of objects appears the popup with the filter does not appear.


Here is my example:

When I assign assign a resource to an employee with my restricted User, Manager-Tool loads for awhile and than shows an x0.000 persons.

When I assign assign a resource to an employee with admin User, Manager-Tool pops up a filter immediately, I enter a name and the Manager-Tool shows the matching persons.


Which permission did I miss? Is there a form I need to add?

Thanks

Thomas