Left channels mutes after some time.
When using an external wired headset, after a short time, the left ear channel mutes. If I unplug the headset and re-plug it, it works again on both channels. This happened to me multiple times. Specifically, while having mumla in the background and taking pictures with another app. I never had this with other apps. Not sure if it really has anything to do with mumla, so just putting the issue out here, in case someone else has a similar experience I'll update this, if I experience it again with more info about circumstances.