We can no longer share a dashboard with users from our own workspace. I received the message: "This dashboard contains Power BI Pro content. Only users that have Power BI Pro will have access to it"...
5/1: I no longer get a warning about Pro content but I am still unable to share. No "Share" button appears.
We are also having this issue; these are new dashboards that I'm trying to share for the first time. This is also the first time I've tried to share anything. I have a Free license and the "Share" button simply isn't there. An associate of mine who has a Pro license does see the share button. I also have a notification that I am using Pro content but it doesn't appear I have Pro content, especially since all the content was created with my Free license.