I encode it. I don't know why but this is the third video that comes up like that... So I don't hear the audio I recorded with my mic but the sounds from the computer. After I encode it, the sounds from the computer and the recorded audio are there... But the preview doesn't show them both and I'm not using multi-channel recordings... But if I do it's the same.
PS: Oh yeah found the problem. After the update in the microphone settings it ticked the "Record audio into separate audio track"