How to change RStudio's UI font?

How can I change the font that's being used for UI in RStudio?


Right now, it's using some serif font while I'd just like it to use my system font like the menu bar does.


Same issue here. I suspect this is OS specific, and perhaps this is just a replacement font, as the default font is missing. Perhaps if we knew the default font, we could then install it and make sure it's there. Hoping this may be of help, here is the version I am currently using:

RStudio 2023.06.1+524 "Mountain Hydrangea" Release (547dcf861cac0253a8abb52c135e44e02ba407a1, 2023-07-07) for RHEL 9 Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) rstudio/2023.06.1+524 Chrome/110.0.5481.208 Electron/23.3.0 Safari/537.36

For the records, I previously installed the rstudio-desktop package distributed with Fedora, which had the usual font (not this odd serif), but had other issues (it would remain stuck with Quarto-based projects)

Top menu looks alright, but other components don't, see e.g.:

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