"Computer says no" "Creative brain says yes"
With great power comes great responsibility. The concept allows for a lof of creativity.
Sometimes creativity and computer logic don't go hand in hand. And, there will be situations, where your creative mind and solution works different than what the computers shows.
The power of a pencil
Start with a sketch. This sketch (on paper or tablet) will help you to organize the execution, and will hi-light the possible pitfalls.
E.g. If your logo is set to stick to the left side of a snippet, and your snippet is set to stick to a certain position in your document, you have created a de-facto constraint.
The list of possible examples would be too big, but we wanted to put this out here, so you are always aware of this possibility.