Since NUX unable to add newly built courses into specialization sections

Summary

Courses not appearing in the add activity search boxes on specializations

Content

Since we moved to NUX, any newly built courses do not appear in the search when adding activities into a specialisation. Has anybody else experienced this?

Steps:

Steps: 
1. Create brand new course with self service offering - please note the learner access is self service, details mode 
2. Create a new specialization 
3. In a section in the specialization, click add activity and search for the newly built courses to add in, however they do not appear in the search results. 

Version

20b/20C