Public Plans are Not Appearing in Organization Users' Planner Hub

 @Joanna Parkhurst, 

My organization has just started using Planner. My frustration is the understanding of the meaning of "Public" when it is assigned to a Plan. It states " Anyone in my organization can see plan contents". That is not true until I add that member to the plan which in turn adds them to the group that Plan is part of. With that, "Public" is the same as "Private" which is "Only members I add can see plan contents". If a plan is "Public" then anybody in my company or organization should be able to open that plan.

With respect to the search feature it should be as simple as searching for the plan title. You would then be able to open it and join it, if it is Public. If it is Private then you wouldn't be able to find it or join it.