I encountered several of these annoyances myself. Turning off auto-switching removed some issues with them randomly jumping between devices but now it's just more manual labor to connect them.

Having had my share of annoying buzzing sounds I wrote these up a while ago, since I got them replaced 3 times I don't have any of these any more though:

- https://annoying.technology/posts/abea6876cf4f2e13/

- https://annoying.technology/posts/d3e6a4bce1e140b2/

I'm still using them every day and despite the annoyances the small form factor and the sound quality are just good enough to put up with it.