Why does the Cancel Initiative button in Learning Initiatives not remove the assignments?

Summary:

Attempting to cancel a Learning Initiative using the Cancel Initiative button and the assignments are not being removed from the learners. Additionally, some courses were assigned twice through the same initiative using the analysis report, and others weren't.

Content (required):

We had an analysis report incorrectly built, which sent out assignments through a Learning Initiative to the entire organization, and some made the same course assignment twice. I'm trying to use the cancel button and nothing is happening. This has been occurring for a few days.

Version (include the version you are using, if applicable):

21C

Code Snippet (add any code snippets that support your topic, if applicable):