Your system information

• Steam client version (build number or date): 2019-11-07 23:57:46
• Distribution (e.g. Ubuntu): Ubuntu
• Opted into Steam client beta?: Yes
• Have you checked for system updates?: Yes

Please describe your issue in as much detail as possible:

Audio from external applications are available during Remote Play Together. We had a voice chat through Teamspeak running and when the Linux users hosts a remote session that client can hear that audio when they are actively speaking. When a Windows users hosts a remote session we do not experience the same issue.

Steps for reproducing this issue:

1. Have an external application providing additional audio (Teamspeak, media player)
2. Linux user host a remote play session to a client
3. Client is able to hear external application audio when joined to remote play session