My experience may be a unique one with a combination of software and hardware.
When I open Telegram (1.9.3 from the repo - but also many previous versions) on Solus Budgie, my USB Blue Yeti Nano microphone starts flashing yellow, and goes back to solid red or green when I open Sound Settings (which I have permanently on my panel).
It's one of these things I have just gotten used to, but also wondering if anyone here is experiencing the same or has any idea what is happening to cause this?