Abnormal.
Heat.
Remove it.
Small fan(s).
Make sure airflow, vent slots not blocked.< important. dust.
Get it off warm items.
There was a long debate some years ago as to whether it was better for the longevity of e-devices to turn them on and off or to leave them on.
Leaving them on added to the accumulated life, whereas turning them on and off, with successive expansion and contraction of the connections, etc, would reduce life span.
Don't know what the upshot was. I suppose it's just that more modern devices might not be as sensitive to these effects.
But definitely abnormal.
Bad luck?
But seek physical world problem anyway.
Cure it.