Created attachment 75261 [details]
Document to reproduce the behaviour

If a document is in the change record mode with changes shown (I use the german version: "Bearbeiten"->"Änderungen"->"Aufzeichnen" und "Bearbeiten" -> "Änderungen" -> "Anzeigen" both active) and you delete a paragraph (especially the paragraph itself), then the stylesheet format of the next paragraph is switched to the stylesheet format of the deleted paragraph, when the file is saved. The format change happens immediately before saving.

It is the same behaviour, if you switch the "Bearbeiten" -> "Änderungen" -> "Anzeigen" from active to inactive.

If only charaters in the paragraph are deleted - and not the paragraph itself -, it works correctly.

To reproduce:
- Use the attached example document.
- Position the cursor in the line next to the paragraph "DELETE THE NEXT PARAGRAPH:" just before the paragraph end character.
- Press <DEL>
=> The paragaraph end character is marked as deleted and the change is marked by the vertical line on the left AND the next paragraph (next line) is marked as changed somehow by the vertical line on the left
- Save the file
=> The format of the paragraph "Headline formatted as „Headline 1“" will change to "Standard" instead of the expected "Headline 1" stylesheet.