Update: Never mind! If you're here just for FontHack, there's nothing wrong with it... Please do ignore this post and nexts 3 posts by me as they're off-topic.
Can someone with KT 5.1.0 and up who has never installed FontHack help me here? Please extract attached file and open one of two AZW3 files, go to a page that is not sparse (not 1st page) and tell me if alphabets forming wor
ms you see on the screen

are connected together or not!
Let's see if there exist someone who saw this thread and hasn't installed yet!
Examples of words:
Connected:
شاهنامه
Not connected:
ش ا ه ن ا م ه
Clarification:
Left picture: No FontHack installed (doesn't affect) + original libfreetype.so.6 ----> I noticed this was NOT a KF8 file, as I converted it to mobi with Calibre.
Right picture: FontHack installed + libfreetype.so.6.8.1 ----> This is not AZW3 either as I converted it to mobi.