No sound when other person stars camera in online call(fb messenger/skype etc.)

Hello,

I recently installed Miui V7 for my SM-G900F, and almost all works fine except when I want to do a videochat. If I have my camera on there is no problem, I hear them, they hear me. If they start their camera they hear me but I can't hear them at all. Tried switching from speaker to phone normal talking (the speaker over "SAMSUNG" logo), no use. I have no idea why, maybe some missing permissions?

I installed it from here: http://forum.xda-developers.com/gala...-8-11-t2946540

Please HELP, I love Miui and I don't want to "downgrade" from it.

Thanks in advance,

Denis