An easy way to reproduce this (works for me at least):
Install "stallboard" app from the store, run it, play a couple of sounds and then close it (swipe up/down in the window list) => media-hub-server starts spinning. This doesn't involve a unity8 crash, so not 100% sure it's the same problem described in this bug, but it sure seems related.
An easy way to reproduce this (works for me at least):
Install "stallboard" app from the store, run it, play a couple of sounds and then close it (swipe up/down in the window list) => media-hub-server starts spinning. This doesn't involve a unity8 crash, so not 100% sure it's the same problem described in this bug, but it sure seems related.