This is one of the reasons I don't like aircraft with the step in front of the wing, such as the RV12, and don't understand why manufacturers design them like this.
I don't believe it is sensible to get into the habit of exiting via the wing leading edge, because it might happen instinctively when exiting another type and accidents such as this may happen.
Even if the prop isn't turning it can cause injury if you were to stumble into it when getting down from the wing.