Fluxer Direct Capture Audio pops up and becomes default silencing all apps on joining voice. Arch/PipeWire/KDE Wayland

I just had a weird bug where I joined a voice channel and now I have a new mysterious audio device called Fluxer Direct Capture Audio and it's made default (as KDE shows), so apps output their sound to it. I had to reverse the setting back to Built-in Audio Analog Stereo to get my sound back. I didn't even get to hear people yet, but at least 1 person has heard what I said in the microphone, so voice calls are partially tested. I also have two of those "Fluxer Direct Capture Audio" devices right now, one with 95% volume and the other with 100% volume.

Doesn't reproduce on my own machine. But here's what I did:

1. Join a voice channel (the bug might have occurred here)
2. Start a screen share (or here)
3. Chose my only screen

Stable Desktop 2026.1006.171735, Web 2026.1008.22643, Linux 7.2.9-arch1-1 (x64), Electron 44.4.1, Chrome 152.0.7977.78, Node 24.21.0, Locale en-US

On screenshot, I already returned the default audio output choice back to normal. As for the transcript, I only launched with --ozone-platform=x11 to make user interface appear in the window, otherwise it's just the background color. And this isn't specific to Fluxer, I had to do the exact same thing for a Discord client when using the combination of KDE Wayland + nouveau (community driver for old NVidia graphics cards like mine that isn't known for its quality, though it's pretty cool and even supports Vulkan 1.2 on my GPU)