A removable insert can conceal a spill or condensation even when the visible upper surface looks dry. Inspect it only if the manual identifies it as user-removable.
What the observation tells you
The shape may allow liquid to collect at an edge rather than run into view. This observation differs from water emerging from a fixed panel or electrical fitting. Pulling an unfamiliar moulding apart to find a hidden space may break clips or expose areas not intended for cleaning.
A useful next step
Remove permitted fittings carefully, protect food and clean and dry them as instructed. Note whether the liquid returns without a new spill. If it does, record the location and ask for advice rather than sealing the gap with adhesive.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.