Heat mark on MBP display and Apple logo?

[chrishatch]

My 2015 MacBook Pro has developed a strange “heat mark” on the outer shell’s Apple logo. The plastic has actually “bubbled up” and I can feel ridges on the plastic.

The damage has extended to the display itself. There is a dark halo spot directly opposite the damaged side.

This issue seems to have appeared overnight. There was no external heat or pressure applied to the lid.

 

[Sanpete]

Where was it and what was it doing overnight?

 

[chrishatch]

On a table with the lid closed, powered on but not performing any tasks.

 

[Sanpete]

Have you checked the system log to see if something odd was going on? If you're pretty sure it happened overnight, that might be a good next step.