Sharing an editable link from a Pro workspace now works the way it should: any number of collaborators can join at the same time, and they do not need a Playcode account - opening the link is enough.
Previously, collaborators who were not signed in could be turned away with a "collaboration limit reached" message even when the project owner was on Pro. That check now runs on our servers against the project's actual plan, so it can no longer misfire.
Free projects keep the existing limit of 2 people at once, and the project owner now sees a notice when someone was turned away - the AI agent working in your project no longer counts toward that limit.