I know you say it is not rendering, but just in case this happens in previews can you try if https://code.launchpad.net/~aacid/unity8/fasterMovingFakeHighlight/+merge/295071 fixes it?
I know you say it is not rendering, but just in case this happens in previews can you try if https:/ /code.launchpad .net/~aacid/ unity8/ fasterMovingFak eHighlight/ +merge/ 295071 fixes it?