The push-pull tool has hit an edge or face at that point. Try inferencing to a point on the opposite face. Sometimes you’ll see that message and the push pull still works. Like if your material is 0.3m it would say “offset limited to 0.3m” but when you do the 2nd click it still cuts it off.
If you share your SketchUp file here (drag it to where you type your reply) and we can take a look at it.
