Sharing a node grants — and opens — that node

When someone shared a space or a page with you, the invitation could name the internal access list behind it — "You've been given access to CollaborationNotus/_Access" — and its button opened that list instead of the space. The same mix-up applied the permission one level too deep, so a freshly invited person could be told they had access while the space itself still looked closed to them.

Grants are now anchored to the node they were made on: invitations name and open that node, and the access takes effect there and everywhere below it. Existing grants are repaired automatically on upgrade. Installation-wide grants, which have no single node to open, no longer send an invitation mail.