Why is my camera app behaving weird since update/factory reset

So, I did a software update for my Alcatel OneTouch Idol 3 a few days ago and decided to do a factory reset afterwards because my phone was cluttered with garbage. Since then, my camera App just disappeared from the app drawer and my homescreen, and when I launch it from the gallery or the quick camera button on my lockscreen I get a black screen with the App's UI visible but no Image being shown. Also, camera apps i downloaded from the appstore and whatsapp only use the front camera and treat the "flip camera" button as Kind of a "Zoom-out-button". I have checked the camera app under settings>apps, it's neither restricted nor deactivated. I went on to delete it's data and clear it's cache as well as try a secure boot. What the actual hell is ging on and how do I fix it.

from Android Forums at AndroidCentral.com - Ask a Question //forums.androidcentral.com/showthread.php?t=784286&goto=newpost
via IFTTT