Hi
I have done some investigation and it seems that this is a general issue for many people. However after further investigation the issue, for some strange reason, only applies to certain font sizes. The problem font sizes are as follows:
Simplified Arabic: 8, 10, 11
Miriam Fixed: 10, 11
All other font sizes seem to display correctly. So if you can avoid using these font sizes it may resolve your problem. Sorry I can't be more helpful.
Good luck.
Tony(OTPM)