I created a simple new document yesterday and typed in around 30 lines of text, I think all Cambria 12 with around 6 x rectangular images of different sizes interspersed with the text. There were no variations in text format, except possibly for underlining of headings.
When I opened the document this morning, which was created and has remained on the same Windows 10 laptop, the style has changed to “Default Style” and the font to Geneva, which I had never heard of, and almost all of the text is underlined. All the images have disappeared, though there are some gaps with carriage returns where they were.
How can this possibly happen? How can I avoid it in future? I have only been using LibreOffice for a few weeks having switched from MS Office and this is very worrying. NB Document was inadvertently saved as MS Word.