Display issues since 10.13.3 upgrade.
I have a Late 2013 macbook Pro (2.6 i7, 16GB, Iris Pro 1536, 2GB GT750M).
Every since the 10.13.3 the external displays (2 x 27" thunderbolts) have been glitchy, often not working when plugged in, causing the laptop screen to go blank. In most cases requiring a forced reboot. happens almost daily.
I've noticed that a lot of others are starting to have display issues with external displays... sounds like Apple stuffed something....
MacBook Pro with Retina display, macOS High Sierra (10.13.3), Late 2013 2.6Ghz i7