Having a problem after installing 10.13.4. When the system comes out of sleep, the display will often (but not always) flicker pretty rapidly in a seemingly random pattern. It won't stop until I close the lid and let it sit for a while, and then reopen it. This is on a 2017 MBP. I've never had this problem before. Without specific evidence, I think this a problem with the .4 update, and is not a hardware issue. Anyone else see this problem?