Can't kill background tasks

Has anyone come across background tasks that won’t kill?
I have tried task.kill() as well as the crosses while running and in the background tasks log.
If they do disappear, as soon as you run the app again they reappear.

We’ve actually just found and fixed an issue with killing Background Tasks. Please can you try again now and let us know how you get on?

[Moved to bug reports]

Working as intended now, thank you Ian.

Thanks for the update!