After the update from 5.18/19 to 5.20, the games has no sound. The UI sound and WII games works fine, but the other emulators has no sound. It happens only on my Panasonic TV, if I try on Sharp TV, the sound works fine. I noticed that the kodi UI sound does not work too, but the IPTV streams has sound. I tried to set the sound options from my TV to digital/analogic, but when it is in analogic no sound works at all and in digital option, the UI sound works including background music etc. Only some emulators have no sound, I guess all emulators that is implemented in libretro.