Unopened chats and black cameras

OOOHH MYYYY GOOOOODDDDDDD!! A bug that comes with this new update is really annoying the beans out of me!!!!! Where someone will send me a chat and I open it and everything is fine I see it or read it but then when I return to my chat page, it says I didnt open their chat, leaving me with an unopened chat box. Because of the "unopened" chat, I cant double tap on the person to snap them or see when they snapped me last. Please fix, its very annoying. Also, when I go to take a picture its just a black screen on both sides of the camera so I cant see what Im taking a picture of unless I clear my app and try again. This are recent bugs, please fix.

fortoday9 about Snapchat, v10.4.1.0