I've noticed in 2.8 lately it seems to run in a loop, continually running the same job and outputting the same clip for each one. I have to manually kill it to stop. It never registers that the job is complete.
I think I figured out that all the output options are checked, for Animation[Sharp], Animation[Smooth], and Real Life. So I'm getting 12 versions of every input. There's no way to turn them all off at once. And I'm not seeing a way to save my choices on exit, forcing me to disable all of them every time.