Thanks DoomMeister! It is the IRS sensor! I guess I panicked and started posting on the forums rather than checking the obvious which is the sensor icons in the top right. Is there any DIY fix or I need to contact Yuneec support?
Edit: I forgot one detail: the original sensor glass got broken...
Not sure what happens with my Breeze. When I started it the other day outdoor it shot up in the sky uncontrollably. The controller was of no help. At some point, it lost connection and then I saw it falling from the sky and landing on my neighbor's lawn in pieces. I managed to put it back...