Operating system: elementaryOS 0.4.1
Graphics card: GTX 1080
Broken: 2.80, cf75aea21857
Short description of error
When the Show Limits option is enabled in Camera Viewport Display options and the Depth of Field Distance Value is higher than the Clip Start Value (so usually anything above 0.1), the yellow DoF crosshair is visible even when you are looking through the camera, which is distracting and not really usable anyway.
In 2.79 the Camera Limits and DoF crosshair are hidden when you are in Camera View, which makes sense, I think.
Exact steps for others to reproduce the error
Here's a blendfile and screenshot demonstrating ths issue: