i solved it myself
just needed to wait and after that put them back in my inventory..

Hello,
I installed FasterRobots Mod by superminor to test the Speed.
But now the ConstructionRobots don't come back to me. They fly to chest with Materials and build planned things.
And i don't want that. So i deactivated the Mod, but they still flying to the Chest.

Anyone can help me fix that ...