Question / Help Microphone silenced when switching to game window while recording

Hi all, I'm using my headset's microphone to record my commentary by setting that microphone as the device for "mic/aux" in the Mixer window. When i watch my recording back though, it seems that my voice is picked up fine until i switch to the game window. Then, the game audio is being recorded fine, but my commentary is muted.
And in my windows settings, i have the headset's microphone set as default as well as "default communication device".
Here is my log file, any help is appreciated.
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