Paper2D - Isometric Layer offset?

Hi there…

I´m trying to use paper2D Tilemap Editor with isometric Tiles.

See:

This works well - for the first layer.
Now i want to add additional Layers:

The Problem now is:
In isometric View, the additional layers need to have an Offset of the Tile height, to map correctly above the underlaying Layers.
Now, the second Layer has the same “height” as the first:

Is there any “Feature” i missed to archive correct layer Setup for isometric View?

Cause even if i FAKE the second Layer, by letting the first Tile row empty… the Height isn´t correct… See:

(red = correct… yellow = current INCORRECT)

The Question is still unanswered ^^