I fixed this issue by going to "Paragraph Styles" window, creating a new style, I called it Arabic, went to Paragraph Style Option and under "Basic Character..." I selected my default Arabic font (this step is optional), then for "Advanced Character..." set Language to "Arabic", and in "Middle East Character..." set Digits to "RTL Arabic", and Character Direction to "Right to Left"
Now, whenever I need to type or work with Arabic text I use this Paragraph Style, you can change the font in the regular Character Window.
I fixed this issue by going to "Paragraph Styles" window, creating a new style, I called it Arabic, went to Paragraph Style Option and under "Basic Character..." I selected my default Arabic font (this step is optional), then for "Advanced Character..." set Language to "Arabic", and in "Middle East Character..." set Digits to "RTL Arabic", and Character Direction to "Right to Left"
Now, whenever I need to type or work with Arabic text I use this Paragraph Style, you can change the font in the regular Character Window.