No. Some programmes expect a cold start, while others request preheating. Starting from a different condition can change how their timed sequence performs.
What the observation means
An automatic programme may account for the time it takes to warm the cavity. If you preheat separately, food may receive a stronger early heat exposure than that sequence assumes. Conversely, a programme that expects a ready oven may not allow enough cooking time after a cold start. The appliance's instructions resolve this distinction; the word automatic does not.
A useful next step
Check the specific programme, not just the oven's general preheat advice. Note whether another meal had recently left the cavity warm and whether the display requested cooling before starting. If an unexpected result only occurs on successive batches, that starting condition is valuable information. Do not force a programme past a temperature warning or repeatedly cancel its preparation stages.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.