Question [Q] a minor bug in almost all roms (s duos - gt7562)

Hey devs.
I am using sgs duos 7562.
I tried so many roms but all of them had a common bug....... (might be thats the problem with my phone) and hence i had to switch back to stock rom and manually debloat it.
the problem with me is that after switching to the custom roms like "PMP light, PMP razor, PMP u-ex, SGS5 xperience rom, etc (I tried only these as they include touchwiz) HINDI LANGUAGE HAS A BUG. for example - I receive hindi messages on whatsapp, facebook etc but can't read them as they don't show properly............... please help me in this matter. Is this problem common in all phones or only in my phone.
please help me...........
because of the one bug I can't use those super awesum roms....
.
by the way, one more request......
Please develop a rom for sgs duos (like legoice for canvas lite) with boot animation, boot logo everything changed to a high ranged samsung phone.......