Does every Surface Book screen buldge?

[pcpartpicker]

Hi guys.
I have a chance to buy used Surface Book in unknown conditon with i5 6300U model.
On pics looks okay.
In the future may I expect for screen to buldge?
Would it happen and it depends on what?

 

[sharpuser]

I have been intensely using two Surface Book 2 15" devices for about 5 years now. No bulge. No troubles. Lived around the world with both.

 

[GreyFox7]

AFAIK the "battery of the bulge" is a completely random hit-or-miss condition of the battery manufacturing process.