I'm facing the same issue with Ubuntu 18.04 and Kubuntu 18.04. I also tried a live CD which had the same problem.
I tried Apple Airpods and a Sennheiser headset and had the same issue with both. For me personally, this is the biggest issue I have with Ubuntu 18.04 right now as it doesn't let me use a wireless headset for meetings so it affects my work.
I'm facing the same issue with Ubuntu 18.04 and Kubuntu 18.04. I also tried a live CD which had the same problem.
I tried Apple Airpods and a Sennheiser headset and had the same issue with both. For me personally, this is the biggest issue I have with Ubuntu 18.04 right now as it doesn't let me use a wireless headset for meetings so it affects my work.