No scroll bar in hierarchy list for dimensions

Hello all,

We have around 20-25 hierarchies for cost center. When we add this dimension in SPM query, the list of hierarchies shown for this dimensions comes up as one single list. The list just shows only 0-12 hierarchies and there is no scroll here to navigate down to the last hierarchy.

Is there some setting which enables scroll in flex UI for the list of hierarchies?

Regards,

Prasanna