Combo empty Store loaded

Hello,

I have a store, created and loaded in the launch function in application.js. This store have an sotreId. The store is ajax et return 4 elements.

I have a combo in a view wich use this store (Ext.getSotre(xxx)).

But my combo is empty.

If i add the combo in the load function, the combo display elements.

With ExtJS 4, the combo is refresh automatically when the store are loaded. It's not the case with ExtJS 5 ?

Thank you for your help.

LaZag