"Horizontal lines on top and bottom screen"に関する回答I’m another victim of this problem. My device is MacBook Pro 13-inch, 2017 with Touch Bar. it seems that it’s heavily affecting 2016 & 2017 models, 2018 will follow soon. I’m running my Mac always in A/C controlled environment, few lines start to appear at the lower part of display then increase in numbers until they form a thick grey bar. the only way to solve it is to close the lid or shutdown the laptop for an hour or so. Sometimes this thick bar starts flickering and displaying random rainbow colors as show. Apple should really consider a recall program for this issue. Update as of 08/07/2020: I escalated the issue to Apple customer support, they've managed to give me warranty exception for out of warranty service, the display was replaced for free!