Avoid stressing either door and arrange competent assessment. A shared hinge area can affect support and alignment of more than one door.
What the observation tells you
A visible screw or cover does not establish a safe tightening procedure or reveal damage beneath it. Lifting a loaded door by its handle can make matters worse. A seal complaint may actually originate in the support arrangement.
A useful next step
Keep heavy door contents safely unloaded where appropriate and record the visible movement without forcing it. Provide the model and any impact or reversal history so the repair can be planned correctly.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.