Recurring growth suggests the conditions allowing moisture and residue remain, even if the visible surface was wiped. Review drying, spills and closure rather than repeatedly adding stronger cleaner.
What the observation tells you
A fold that stays damp or an area repeatedly wetted by leaking food needs a different response from a one-off mark. A split or detached seal can also be difficult to clean adequately. Do not pull apart the gasket or use an unapproved chemical treatment to reach hidden material.
A useful next step
Follow the model's cleaning method and dry the accessible surfaces. Record where the problem returns and whether a door gap is visible. Persistent damage or contamination that cannot be safely cleaned warrants advice about the fitting.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.