Some designs do, so gas availability alone may not explain why the oven will not operate. The model's control arrangement is the reference.
What the observation means
Ignition, timers and safety systems can involve electricity even where the cooking heat comes from gas. This does not authorise manual ignition or bypassing a clock.
A useful next step
Check the ordinary owner settings after a known safe supply interruption. Report whether the display, ignition and oven are affected separately. Leave internal electrical and gas testing to appropriately qualified people, and stop immediately if gas is smelled or another unsafe condition appears.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.