Teaser lost after scheduling

When we scheduled a node, the nodeteaser lost its value.
I examined the problem, and it is reproducible: Chose a node, fill the nodeteaser field, give a scheduling and submit. After the scheduling the nodeteaser become empty. I checked if we edit the node, before the scheduling, the teaser is there.
I hope I have cached this bug, and I created and attached a patch, which solved this.