A vertical line has appeared next to the text in .odt docs and I can’t seem to remove it. It comes up with delete and typing normally.
Edit -> Track Changes -> Record activated (inadvertently typed CTRL+SHIFT+C)? If yes - Right click - > Accept Change (or Edit -> Track Changes -> Accept All) and disable using  CTRL+SHIFT+C.
I found it with the help of another user.
Just go to
File/Properties/Security/Record Changes
Unselect Record changes and OK it, that simple.
Just to mention: This is the same as the comment above. Just another place. Toggling on one path, toggles the other as well.
