You are right, it is a known bug. It is fixed in 1.1.2 (so slightly newer than what you have). Look here:
https://gitlab.com/inkscape/inkscape/-/ ... _732366466
So the issue is that a library called Pango changed how it handles text. Older versions of Pango work fine, newer ones need an updated version of Inkscape.
So there are a few possible solutions:
Use the appimage here: https://inkscape.org/release/all/gnulinux/appimage/ (appimage is a way of installing that has all the needed libraries embedded, so it's a working version of Pango) (Here's how to use appimage on manjaro: https://forum.manjaro.org/t/how-to-use- ... inux/34375)
Use a development version of Inkscape (might crash though, it's not a stable version) - you could look here https://aur.archlinux.org/packages/inkscape-git/ or here https://inkscape.org/release/dev/platforms/