The closing mechanism or door arrangement may need attention. A soft-close feature should not be treated as permission to let a damaged or misaligned door fall.
What the observation means
Consider whether the change followed cleaning, removal of the door or an impact. The timing is useful but does not identify the failed part. A shelf or accessory obstructing closure is also a different observation from a hinge that no longer slows the door.
A useful next step
Check only for obvious loose items while the oven is cool. If normal closure remains uncertain, stop using it and describe the movement. Do not oil hinges, bend the door or force the mechanism to re-engage.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.