Door handle on automatic doors – why?

I was traveling by train, and I came across the board toilet in the picture below:

Unlike other board toilets I encountered so far, this one had an automatic door. At least this is what I suspected because of the blue button with the red LEDs. It is not visible in the picture, but the blue sign above the button says "Automatic".

However, during my ride I saw probably like five people entering the toilet, and all using the door handle instead of the button. And they struggled a lot to open the door because it was not meant to be opened manually. Actually, the door seems to be broken because of this.

Why is there an (obvious) door handle in the first place?

I can imagine that it is useful to have one in the case the mechanism is broken (like now), but the one presented here literally invites me to pull it without considering alternatives. How can this be done better?

How can the door handle be designed less dominant, or how can the automatic character of the door made more obvious?

I can imagine, that the (still somehow salient) button was ignored because it was close to an exit and some people might associate the button with this other door on the left. These doors have very similar buttons, always open automatically, and this is well-known.