Weird microphone bug with android lollipop topic

I recently got android lollipop on my 2012 Nexus 7 and I noticed the microphone doesn't work in Portrait mode. I've tried saying "ok google", pressing the button to talk, using the microphone while taking a video and even installed a sound recorder app and the microphone never worked. Though when I flip the tablet to landscape mode the microphone starts working normaly, (and no my hand isn't blocking the microphone hole).

It's very wierd, the microphone only works in landscape mode...