I can see red clearly and so not sure means I can go.
I've only noticed issues in a few situations. When I'm driving at night and suddenly the weirdly aimed streetlight turns yellow - until it changed I didn't even know there was a stoplight there. The second was I was making a left turn at sunset (sun behind me) and the green arrow came on but the red light remained on so I couldn't see it was time/safe to go until my wife alerted me.