This is a really strange one. Adjusting the space between lines is important. Lately, however, when I highlight some text and, using the Paragraph formatting option, choose a different line spacing (this morning it was double space) the text simply disappears. I was able to recover by clicking the undo arrow, but I need to be able to set my document to double space for a while so I can finish some editing.
I’m using Libre Writer 22.214.171.124 on Ubuntu Linux 20.04.