On MacOs in Firefox and Safari I am no longer able to preview attached PDF's and view and edit inline notes. These are existing pages created in the "legacy" page-template (in the new editing experience, PDF-annotating is not available AFAIK).
Instead every time a click on a link that points to a page-attachment the document is downloaded.
Only in Chrome the behaviour still works as expected. But Chrome is not our browser of choice, so our workflow is broken.