QuarkXPress 2015, QuarkXPress 2016
Mac OS X
Armenian Characters doesn't appear in Tahoma font on Mac
The Tahoma font problem was not related with QuarkXPress. This is the font version problem. The font version that comes pre-installed with Mac 5.012x does not support the Armenian code page and therefore it does not contain Armenian characters. The location of this HDD > Library > Fonts > Tahoma.ttf. Tahoma font version that comes preinstalled with Windows 10 is 6.91 supports the Armenian code page and contains Armenian characters.
If you install Microsoft Office 2016 to your MAC OS, then this will install the Microsoft font to your system (location: /Library/Fonts/Microsoft/Tahoma.ttf). The font version of Tahoma installed with Microsoft Office is 5.25i and supports the Armenian code page and contains Armenian characters.
Option 1: You can remove the default Tahoma (which was preinstalled by mac) and replace it with Microsoft Office Tahoma font. You can do to manually, or use Font Book or any font management utility.
Option 2: Copy the Tahoma font from Windows to Mac. Remove the default Tahoma (which was preinstalled by mac) and replace it with Windows Tahoma font.