Check that the accessory is the approved part and is positioned exactly as its instructions require. A change immediately after replacement is useful evidence, even when the motor has not been used.
What the observation tells you
A stiffer new baffle may behave differently from a worn one, but cutting larger openings or forcing it downward can compromise its purpose. Water accumulating above the accessory does not identify a blockage farther along the drain by itself.
A useful next step
Keep the disposer off while verifying the part reference and installation guidance. If the arrangement is correct yet normal drainage remains poor, report that finding instead of modifying the baffle.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.