Thank you for your enquiry. I have tested this and it is indeed a bug. I would kindly ask you to report this bug according to our policy and I will make sure to verify it as soon as possible.
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...