I've checked HAL and to me everything seems fine but behaviour that you are explaining might be cause of a blank basketno on that webpage. We need a repeatable situation for this to debug and test.
I would like to know what BackgroundHALShouldPause does, and how to use it. While it's listed in the HAL Primitives report, it is not used in source code and it doesn't appear in the LMS HAL...