TreeTableView inherits methods isQuickSearchAllowed() and setQuickSearchAllowed() from TreeView. But calling these methods have no effect, since the initialization of the quick search system is not called due to overridden initializeTree() method.
This is fixed by changeset: 213195:8d734b0ca5dd
Integrated into 'main-golden', will be available in build *201202170400* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)
Log: #110686, #208098 Quick search feature implemented for TreeTableView and OutlineView.