I had the same problem, not just on Orion, but with Chrome and Safari (for some reason). What I do for a temp fix is highlight the area and hope it returns back to normal. But if you want a more permanent fix, I suggest removing any third-party font blocking software (just in case) or reinstalling the application (full remove and reinstall).
I also remove any ad blocking software/extentions or rules that can screw up with fonts.