The current microphone device is not shown correctly in the microphone setting which is in the "Audio & Voice" category.

It is shown as the word "Title" instead of what device you are using right now.

This bug is 100% happened when you click to any other category in the settings.

Then when you go back to the "Audio & Voice" category, you can see the bug happen again.

Now, the only way to fix it is to click the "change device" button and then close it.

Then it will show your device correctly.

However, it will still happen when you click to any other category in the settings.

But if you close it without click to any other category in the settings, it will be fine, the bug will be gone until you click any other category in the setting again.

Also, this bug will happen no matter you choose "System Default" or other device in the "change device" section.

Lastly, it just a visual bug and it does not have any affect on using the microphone.