I just received my replacement Xperia 10 III device (first was defective), and installed SFOS some hours ago.
I noticed that there is no stereo sound. The top speaker is not used like in the case of my Xperia 10 II for music and ringing. Is this normal? I checked the “Known issues” part in the 18.104.22.168 release notes, and did not find any note regarding this.