USB-C issues
I have MBPro 13 inch touch bar 2017.
After upgrading to MacOS High Sierra, following started to happen.
Right UCB-C works fine... charges and recognizes my devices (disks, stick memory, ethernet, display)
Left USB-C rear... won't charge nor recognizes devices
Left USB-C front... will charge, but not recognize devices
I had authorized repair place run their diagnostics and no H/W issues were found.
MacBook Pro (13-inch, 2017, 4 TBT3), macOS High Sierra (10.13.1)