Some symbol are not well displayed on Math, such as “equal” or brackets. I have disk instaed of “=” and bubble instead of “(” or “)”
Opensymbol seems to be installed and present in /usr/share/fonts/truetype/openoffice
here a screen copy > https://we.tl/t-FZV3c3oaMK
I’m on Debian buster and LO 18.104.22.168 Locale fr-FR (fr_FR.utf8)
Thank for your help !