Sequenced offering in pending approval gets automatically deleted!

Summary:

Can someone help me understand why OLC automatically deletes the registration in an offering on "Pending approval" status?

Content (required):

We have a course with three offerings (eLearning) that learner needs to complete. However, when registering the learner for all three offerings, the system only accepts the first offering, and the rest of the offering stays in Pending Approval and automatically gets deleted.

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

22B

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