I've had this happen to me once with an XPS13-9360.
I use Linux on my laptops exclusively, and it was supposed to enter S3 just fine. But after I closed the lid, something went wrong, and instead of suspending it actually started hogging 100% of CPU. I was unaware of it, and put it into my backpack. Shortly after, I had noticed that my back felt unusually warm. When I got it out, it was infuriatingly hot, almost scalding. I kept pressing down the power button until it turned off, and held it in the open air until both it and the inside of my backpack cooled off enough. Thankfully, it was a cold winter evening, so it didn't take very long.
It's been 3 years now, the laptop works to this day nicely, even after suffering a bent edge on the screen assembly after falling down.
I use Linux on my laptops exclusively, and it was supposed to enter S3 just fine. But after I closed the lid, something went wrong, and instead of suspending it actually started hogging 100% of CPU. I was unaware of it, and put it into my backpack. Shortly after, I had noticed that my back felt unusually warm. When I got it out, it was infuriatingly hot, almost scalding. I kept pressing down the power button until it turned off, and held it in the open air until both it and the inside of my backpack cooled off enough. Thankfully, it was a cold winter evening, so it didn't take very long.
It's been 3 years now, the laptop works to this day nicely, even after suffering a bent edge on the screen assembly after falling down.