I know it's a little embarrasing to ask, but I did not find any answer for my problem.
Sometimes (not always - most probably when the draft is older than 24 hours) when I change text in an existing text block of an draft article, the changed text has a highlightes background in the final article. I assume this is a feature, but how I can turn it off? If I add an text change, I don't want to make this visible to readers.
Many thanks for your help.