Any way to align axis labels?

[jep]

I can't figure out how to get axis labels aligned to the axis, especially when rotated. I'm tempted to call this a bug, but the documentation's so sketchy I can't say it's really a promised feature. I also can't say if I'm just missing something.

For example, I want to do this (mocked up screenshot):
axis1.png

Notice how the labels are all aligned to the top (or right depending on your perspective)?

Instead, this is how it appears:
axis2.png

Here's my code:

Ext.application({
    launch:function () {
        this.viewport = Ext.create('Ext.chart.CartesianChart', {
            fullscreen:'true',
            axes:[
                {type:'numeric',
                    minimum:0,
                    maximum:10000,
                    position:'bottom', fields:['x'],
                    label:{
                        //textAlign:'right',
                        rotate:{
                            degrees:-90
                        }
                    },

                }
            ]
        });
    }
});

As you can see, I've tried textAlign in the label config. No matter what I try, it seems to always center the label. But I can't ever get it to do what I'm talking about in the first image. Can anyone post the code that would actually give you that?

[jep]

Nobody have any guesses? Mitchell?