I have reported a LibreOffice Impress bug here. In that bug, the text of a slide went beyond the page margin
Although it looked fine in Microsoft PowerPoint
Now I cannot reproduce the bug anymore. LibreOffice Impress, the same version used to report the bug and also provided by Canonical, seems to display it correctly.
One major change that happened is that I installed wine. Is it possible that wine installed some fonts that were not originally present, and so when I reported the bug LibreOffice was resorting to some other alternative font?