ExtJs ComboBox LoadMask Second time Store Loading Issue

I had the same problem, basically the loading mask stays, when doing cascading ComboBoxes. Wasted a lot of hours trying to figure it out and then found the solution on a forum. Seems like a bug that needs fixing.

The problem occurs when reloading the ComboBox for the second time:

1. Load a ComboBox data
2. Expand the ComboBox once
3. Reload ComboBox data calling store load function
4. Expand the ComboBox again
5. Loadmask doesn't dissapear like it should

Solution

Ext.override(Ext.LoadMask, {
     onHide: function() {
          this.callParent();
     }
});