I changed the tip in my APP and noticed that one of the plugs was playing a bit quieter. I was searching for some stereo balance slider in the settings as I thought that maybe I accidentally push it to one side a bit (is there even a slider for that on iOS?). Then thought that there's something wrong with bluetooth as lightning headphones sounded as expected. Paired it and unpaired it, restarted iPhone... nothing. Only after a while, I figured out what the problem is. Paper that the tip has been attached to peeled off with the tip and stuck in there. Geezz...
I'm all eco but they could use a bit of plastic there, that a premium product. And while I'm at it, I also miss the plastic case that we got airpods in with a new iPhone - after removing the inside it made a really good case for keeping your headphones.