I didn't even realize there was an issue until reading this. None of my devices were acting strange. I did find an update this morning though for Youtube so applied it. We'll see if I see a difference.
Devices in use:
iPhone 7 plus
iPad Air 2
iPod Touch 6th generation
All devices are on iOS 11.1.1
Devices in use:
iPhone 7 plus
iPad Air 2
iPod Touch 6th generation
All devices are on iOS 11.1.1