Basically, I think it’s a Java set up issue rather than a Protege issue. You might need to install the appropriate fonts into your Java Virtual Machine installation. To do this you will need to put the font file (.ttf file I think) into the lib/fonts/fallback
of your Java installation.
One important question, is which version of Protege are you using and which platform (Windows, macOS, Linux)?
Please, I need an urgent solution. I am working on Protege and I need to
define another language for my case is (English and Arabic) I do not have a
problem with English but in *the Arabic Language*. I have attached a picture
to see how is it appears. Even with Individuals, I have this issue.
Please need help.