There was a bug tdf#128133 about "muddy fonts in LibreOffice GUI with 125% scale in Windows". I have 125% scaled GUI on all my machines with Windows because I have a bad vision. And that bug was very terrible for me.
The bug was a regression but we have couldn't to find a bad commit using bibisect process. We just have had wrong result.
And finally, Jan-Marek Glogowski have found a problem and yesterday he fixed it!
Thank you very much!