Screen sharing voice duplication

Observed behaviour

It's been around an year that me and my bf have been using fluxer to vc, and it never ocurred this problem to us. While we are screen sharing with audio, for some reason on the last update, now my audio also appears on his stream, and same with my stream with his voice appearing, causing a duplicated voice effect (idk the correct term for it in english), this started once he updated fluxer to the current version, and this problem still persists in both browser and desktop app version. Even with fluxer on a different browser and screen sharing other browser it still happens.

Reproduction steps

Go on a voice chat with someone else
Screen share with audio
The other person's audio while speaking will also appear on the stream

Build information

Stable Web 2026.923.120904, Windows NT 10.0 (x64), Opera 135.0.0.0, Locale pt-BR

Platform

macOS, Windows, Linux, Web

Evidence

I can't send the recording here for some reason but i did recorded the problem