Sound comes from speakers and headphones at same time

that is a solution
https://forum.manjaro.org/t/how-do-i-identify-my-sound-card-and-verify-the-proper-driver-is-installed/65984/11?u=simtoecoten

This appears to be about the 15th time in the last month that I could copy/paste same response
    System has 2 active sound servers that are probably conflicting and causing audio issues
      Sound Server-2: PulseAudio v: 14.2 running: yes 
      Sound Server-3: PipeWire v: 0.3.25 running: yes 
    You can choose either:
        Disable the pipewire systemd socket and service to continue using PulseAudio
    systemctl --user mask --now pipewire.socket &&
    systemctl --user stop pipewire.service
    (KDE requires pipewire base package so uninstalling it is not possible for this DE)
    OR
        Install manjaro-pipewire metapackage to get the additional dependency files for Pipewire to replace PulseAudio
and all them seem to be on KDE
Absence of similar comments for other DEs would suggest that only KDE has a dependency on pipewire