@epriestley thank you very much for the fast update and fix. It is working now with my example, and should be much better with a lot of pages.

@epriestley One issue that is still open is adding a change to the beginning and to the end of a large prose text. The diff of that becomes unusable. This is still reproducable with the current stable branch )(fc71a7e92dc26e0d93ec33d709391411d2bcd827 (Mon, Nov 14)). For details / reproduction steps please see T11825.