Touch 1.1.0

Have a spinner configured like this.

Code:
new Ext.form.Spinner({
                            name: 'alpha',
                            label: 'Level',
                            minValue: .2,
                            maxValue: 4.0,
                            incrementValue: .1,
                            value: 1.0,
                            cycle: true
                        })
First click of the '+' button increments to 1.1 and the next click of the '+' button increments to 1.2000000000000002