Not necessarily. Some timers affect one cavity, some can control several, and others include an alarm-only function.
What the observation means
A working untimed oven does not prove that the timed cavity has no settings problem. Likewise, an automatic symbol may belong to a particular oven rather than the whole appliance. The correct mapping is model specific.
A useful next step
Check the timer diagram and note which cavity stopped or waited. Return it to ordinary manual operation only through the documented procedure. Do not bridge the clock or modify wiring to bypass an uncertain timer state.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.