A family of Microsoft products that enable users to capture, organize, and reuse notes electronically.
I am a SwiftKey user since 6 years, and always had this issue with Onenote android. Still not resolved since when I first tried Onenote android in 2017.
The desktop version works without any issue. However, I have found a way to fix the font breaking problem, - though it is not a viable solution.
I wrote in other apps (like Colornote or Google Keep) and then copy-pasted in in Onenote. Now I synced all the notes. Then Changed the font-face on PC Onenote application. Used Shonar Bangla and Nirmala UI. The fonts got corrected on PC, and after another sync, android version shows corrected font. But, I can't edit it on Android, as it breaks the fonts again.