Main display separating / breaking?

[Carrr]

What's going on with this left side? Just bought this 2018 from the original owner. He said he never noticed it when I pointed it out. What are my options and how serious is it?

 

[AS9.9.]

If you already checked that you don't have an old screen protector on there, then in my opinion, it appears the screen may be delaminating.

If I am not mistaken, a new screen from Tesla would cost >$1.4K installed (remember seeing a quote like this somewhere). If I was in your position (out of warranty), I would buy a used screen off eBay and swap it myself, or just live with it.

 

[Carrr]

definitely no screen protector