Using the following code, the overflow button gets cut in half horizontally:

Ext.create('Ext.Toolbar',{
enableOverflow: true,
width: 195,
buttonAlign: 'center',
items: [
{
iconCls: 'icon-home',
scale: 'large'
},
{
iconCls: 'icon-upload',
scale: 'large'
},
{
iconCls: 'icon-prefs',
scale: 'large'
},
{
iconCls: 'icon-logout',
scale: 'large'
},
{
text: 'All Y'
},
{
text: 'All X'
},
{
text: 'Custom'
},
{
text: 'Add'
},
{
text: 'Edit'
},
{
text: 'Stats'
}
]

})