My 16 inch MBP all the sudden stopped waking up the LG 4K display it's connected to. Oddly, it's still getting a charge from the LG monitor, and when I reboot the computer it will suddenly wake up the LG screen and work, but once the MBP goes to sleep again, and then wakes up, the LG monitor won't wake up without a reboot of the MBP. Has anyone else had this issue?