Libre Writer adding parallel lines

I am using LibreOffice Writer and Writer is adding parallel lines outside the left margins of my document. How can I remove these lines? Why is this happening? See attachment.


Moved from category Site Feedback to English as Site Feedback is about feedback on, well, this Ask site.

You enabled Edit > Track changes, Record and Show. If you are the only person editing your document, you don’t need that, just turn them all off, and accept the changes (Accept all).


Thanks for the reply.

I have not enabled Track changes, Record and Show. I am the only person editing the document. Any other suggestions?

Was the text copied from another source and pasted into the document?

If not, please reduce your document to 1-2 pages so that the problem is still visible.
Then upload your document here so that someone can look at it. Thank you very much.