Miter Join. When applying a brush to a closed path fails at start/end point

[gwpriester]

I'm trying to apply a gradient brush to an closed shape. When there is no brush applied, all corners are mitered.

But as soon as I apply a custom brush, the miter is broken at the start/end point.

Anyone know how to get around this?

I can apply a Round Cap, Round Round Join and all ends are rounded but I want pointed corners.