LibreOffice Impress: Slides are formatted differently between Windows and Linux

I use Windows 10 at work and Mageia Linux 6 at home. Usually I have no problem opening LibreOffice documents on either platform - for example, I can prepare a presentation at home and use it at work.

I currently have an issue in Impress, where the bullet-point text seems to take up more space on Windows than on Linux. Having prepared the presentation at home, I noticed that the text ran over the bottom edge of the slide on my Windows machine at work. When I manually reduce the font sizes and then open the presentation on my Linux laptop at home, there’s a lot of blank space. This is annoying.

The fonts are embedded in the file, but I have them installed on both machines in any case. So why do I have this issue? Is anyone familiar with this problem?