Melee Attack Not Working In The Middle Of The Game?`

[xMilkychocolate]

Whenever i'm playing a warframe such as valkyr or oberon who it works to use your ultimate while you're meleeing attacking foes, it does the ultimate, but then zooms in on my frame, not much, but enough to be noticeable, and then all melee attacking does not work. not matter what i do. I have jumped off the side to reset it, i've tried jump attacks, slide attacks, and when i used valkyr's ultimate it disabled me COMPLETELY. so i sat there for 48 seconds worthless not being able to do anything while the enemies destoryed the pod. The ONLY way i have seen this to be fixed is killing myself and using a revive. then it resets whatever goes on and it works. It makes me scared to even USE melee attacks on a frame like valkyr with such a hindering bug. I will attach screenshot of zoomed in screen as soon as i optain one.