Bullet symbols in bulleted lists are invisible

[yump]

I think the cause of this might have something to do with the default OpenSymbol font. If I customize the list and set the font to Liberation Sans or Calibri, the bullets become visible.

But maybe not, because even if the libreoffice-opensymbol-fonts package is installed on the host and visible in flatpack, as verified by fc-match inside a flatpak enter shell, the bullets are still invisible.

This problem doesn't happen with LibreOffice installed by dnf, obviously.

System information:

Operating System: Fedora Linux 38
KDE Plasma Version: 5.27.8
KDE Frameworks Version: 5.110.0
Qt Version: 5.15.10
Kernel Version: 6.5.5-200.fc38.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® Core™ i5-4670K CPU @ 3.40GHz
Memory: 23.0 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 4600