View Available not showing available projects

I seem to have a real problem. When I select View and Available, only a tiny fraction of my projects are showing. I have a plethora of active projects. They are not Deferred or On Hold. I presume they are blocked some how, but I have no clue why or how they are blocked or how to get them unblocked.
This problem just showed up today. Previously View showed me exactly what I expected, all of my active projects with their actions. Now I only get a select few. Those that do show have multiple contexts, some are recurring tasks, some are one offs. It just doesn’t seem to have any rhyme or reason as to why it is not showing my projects.

  Any suggestion what I may have wrong here?
  Thank you in advance

  Ad Astra Per Aspera,