The handle, joints and finish may have care limits that differ from the cooking body. Suitability has to apply to the complete pan.
Understanding this situation
A metal base that tolerates dishwasher conditions does not automatically protect glued, riveted or wooden components. The manufacturer may recommend hand care even when the pan fits the lower rack.
A useful next step
Check the exact cookware instructions before loading. Use a suitable alternative where machine washing is restricted. If a handle loosens or changes, stop using the damaged cookware and describe the complete construction rather than blaming the dishwasher temperature alone.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.