When initially creating the Protean eidolon (naturally in serpentine form), there is a seemingly hanging option that will not disappear, or allow it to be chosen. The program indicates that there is an option to choose an Unchained Eidolon Grab, yet when that option is chosen, it indicates "You cannot select any more abilities." Which is fine (because the real grab is already calculated in), but it doesn't go away despite the increase in level or additional ways to add a grab attack. The reminder is still present.
Option to grab was available for evolutions not taken. Will simply not choose the evolutions.