Could be layout problem, could be probing problem. Most likely both.
First thing to ensure - proper probing (of high speed signals) so what you see on the scope screen is what actually happens in your circuit. Use spring clip, not ground "crocodile tail" and measure between two pins of the transistor (gate/ & source). Never connect ground of your scope probe at random ground point, always pick ground connection as close to probe tip as possible. For slow signals "crocodile tail" is ok, but for fast and hi-current spikes in nearby (ground?) wires - it acts like antenna.