Yes I go up 25mm and than 25mm down.
I do not think that this is a firmware issue, because it does work with Repetier Server 1.0.3. (I have make a downgrade to 1.0.3 after this issue.) But I will test going down 10mm tomorrow.
Furthermore no end stop was trigger.
My printer seems also to ignore all endstops, if it is not homing, but this is another (firmware) issue.