Is it possible to use Touch Interface Asset with UMG?

I recently attached some Touch Interface Asset for my project’s mobile build.

But somehow it actually overlapped my existing UMG buttons and UI.

So the virtual joysticks of Touch Interface works, but all of my UI don’t work for now.

First I think its because of the Z-order, but I cannot find where I can adjust the orders of Touch Interface.

Is there something I missed?