Lines at the bottom of screen on macbook pro two thunderbolts 2017

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test. Take advantage of it, let them tell you what is wrong.

https://www.apple.com/retail/geniusbar/

Hi, I have the same issue too. Did you manage to resolve it?

I sent my Macbook Pro for a diagnostic test & repair at one of the authorised Apple support centers but to no avail. The technician says that diagnostic results do not show any issues & he couldnt reproduce the issue, hence he can’t fix it. =(

hi were you able to fix this problem? i have the same thing. the lines go away when i shut it down for more than just a few minutes but comes back again when i use it when i use a lot of cpu power or dont shut down for a few days (just sleep mode). did you gat any solutions?

Same here. Warranty just ended. And it just started appearing. I spoke with apple support through chat and after trying their solutions the lines seems to get worsened.

Hi, mate. What happened with your screen? Did you get it fixed in the end. Mine has exactly the same problem, showed up today.

I have the exact same issue, and my warranty has also expired recently. Did you manage to solve it?