Weird screen stuff during software update.
Hi, I just bought my MBP 2017 13-in laptop and was updating it from Sierra to Mojave, and when the computer restarts it just showed me a blank screen with the cursor at the corner and then quickly switched to the Apple logo with the bar below it and then the screen just goes dark for a bit and then comes back? And I also noticed out of the corner of my eye that the screen glitches again and it was back to the Apple logo? Is this something regular that happens during updates or is there something wrong?