mdl-select is hidden by mdl-title

[OhhConti]

Hi, I'm using mdl-select in my project. I've put a mdl-select inside a mdl-card but if the select has too many options it would be hidden by a mdl-card-title which is under the other card.
Here an image.

[oshh]

I have a similar problem, also with a mdl-card.
Seems through javascript-manipulation of the mdl-card, the z-index of the visible select element does not catch.
Anyone got a clue?