I've deleted your other post
Creating a PDF. As author of a post you can edit it, look at the More link right top, there you'll find the edit option.
To your question, can you please give more details? LibreCAD version (Help-About), OS version, when did it work, on same version or an earlier on, which steps exactly to reproduce it?
Armin
investing less than half an hour into Search function can save hours or days of waiting for a solution