Posted by dellus on
URL: https://forum.librecad.org/dxf-files-deteriorate-over-time-after-saving-tp5721477p5721502.html

The file opened looks exactly like the pdf.
Empty boxes instead of text? This indicates you have "Draft" mode activated. Then text is simplified to boxes to accelerate  screen rendering. Switch it off.
In your first posting you said also lines were missing. This led me on a wrong track.