Have had the same bug many times, any stuns during haze ult leaves her camera zoomed out. This also makes her bullets not line up with the crosshair when zoomed out. Only fix I found was waiting until ulting again and letting it reset camera when ability is done.
It also seems to reset after a minute or two passes, assuming you can live long enough for that to happen given that you can't see or shoot properly in the interim.
+1 Getting stunned out of ult leaves your fov zoomed out and very weird to try and play. Does pausing fix it? Is there a more consistent way to fix it without interrupting the game and burning your pause