Voice dictation iPhone - 'new paragraph' no longer working but the words are being typed!

I am on iOS Version 17.4 iPhone 15 Pro Max. I use voice dictation a lot. Until recently, the instruction 'New Paragraph' would drop a couple of lines. Now it actually types out the words 'new paragraph'! The instruction 'New Line' still works, and I can of course say that twice to get a new paragraph, but I have got so used to using the 'new paragraph' instruction, so all my emails, messages and notes are littered with these words!

If anyone can help me with a solution I would be eternally grateful.

James