Paragraph Formatting changes from Normal to a different format in the middle of the document.

I thought Shift F1 would give me a clue but it didn't help.

See attached.



Thanks in advance

Nothing was attached. If you can please attach a sample document with three paragraphs: one from before it changes, one after, and one more after.
Attach a Sample File Demonstrating the Problem - Here's How

When you are looking for help, jargon can be important.
There is no such thing as normal paragraph formatting as such, but there is a Normal paragraph style, which does contain paragraph formatting.

1. Use Body Text Style Instead of Normal Style
2. The Importance of Styles in Microsoft Word

Which types of changes do you observe? Does this happen for example when you press Enter in the text or are you doing something else?

As Charles said, I believe we need some "before" and "after" illustrations. Screen shots might be a good start, and also actual Word documents.

__________________
Stefan Blom
Microsoft Word MVP

Microsoft 365 apps for business
Windows 11 Professional