After upgrading our Confluence from 4.3.1 to 6.7.2, some pages have stopped rendering.
If you go to the page, it shows as blank, but if you use the View Source option in Confluence, the content displays fine.
If you edit the page, the content is there, but saving the page doesn't do anything. Adding a few random characters to alter the content and then saving doesn't help either.
If I copy the content from the edit-page and paste it into a new page, it still renders as a blank page. If I copy the content from the "View Source"-window and paste it into a new page, it renders correctly.
Anyone here have an idea what's happening? Any way to fix this for all the affected pages in one go?