I have an Ultimaker 2. Just recently when I begin prints, after the print head extrudes a bit of PLA (with the print bed the normal distance from nozzle) as the print head moves from the front left corner to the middle to begin printing, instead of gradually moving up to the nozzle, the print bed moves immediately to 1mm away from the nozzle, even with the nozzle in the front left corner. The nozzle almost hits the metal clip on the print bed and the pre-extruded plastic clogs on the nozzle, not allowing anything to print properly.
Has anyone seen this problem before? I did a factory reset on the machine, and it is still having the same problem.
Here is a video of the problem: