When enabling "Overlay read more" the "read more" disappears. What am I doing wrong?

Is that on this site?
www.friedensschule-neustadt.de/

A link will help us to see whats happening there.

... it was only localy, but now it is on that site you mentioned.

... oh, and here you see also the odd looking login form with the enormous vertical paddings and at 950px the fields are way too long and at 1164px one field is vertically stacked with its label while the other is still horizontal - really odd.

... and while you are on it ... see the jumping navigation when scrolling?

Sorry about that - the markup changed in the accordion after I had tested the read more overlay. Ive fixed it locally and will release in the next zentools2 update today.

And re the jumping yes I see it here and on mine. Again looks like something has changed in the framework. Will fix this also.

Thanks for your patience.

Ive found the issue and will release in the theme update today.
This will fix it for you:

#navwrap,#sticky-fill {
float: left;
width:100%;
}

Thanks