i have Cinema 4D 17R
So i have a problem because my objects started to be yellow. One moment they were ordinary blue and grey colored and next they were yellow and making a lot of problems. When just moving object it changes shape.
I just wanted to move the object up and it made that peak
When in C4D, hover over the viewport and hit the v key, and then go up to tools and modes, and select "model". That should put it back into object mode for you. The yellow shows selection, and it is showing that you have your polygons (the surfaces between your edges and points) selected on your model.