I've just upgraded from High Sierra to Mojave. I have a Lacie Porsche USB-C drive that I use for Time Machine backups. In High Sierra when I ejected the drive, it would power off and I could safely unplug it. However, now it doesn't spin down and I can't safely unplug. All I can do is put my Mac to sleep which in turn powers down the drive.
I have tried excluding the drive from Spotlight indexing and even disabling indexing altogether but this hasn't helped.
Anyone else having this problem or have a solution?