Since I have been working on ArcGIS online, I have issues with displaying text in my language.
I cannot imagine that ESRI unable to properly display Unicode character on ArcGIS online properly, just wondering if it is it that difficult, or ESRI simply does not care?
paying thousands of dollars and not able to display your text on map viewer.

I posted this issue several times, but still not fixed.
Why does not ESRI try to fix issues with rendering... - Esri Community
Better Support for Unicode - Esri Community
Improve Text rendering for Unicode - Esri Community