Android :: Button In IME's Suggestion Bar Not Clickable

I'm subclassing InputMethodService to create my own personal keyboard. A lot of stuff already works quite nice. But now I'm playing around with the suggestion bar (also called "candiate view"). For now I'm just trying to load a static layout with one button in it:

@Override public View onCreateCandidatesView() {
LayoutInflater mLayoutInflater = LayoutInflater.from(this);
mView = mLayoutInflater.inflate(R.layout.suggestion_bar, null);
return mView;
}

The result looks like this: Which is exactly what I expected, but with one big issue: the button in the suggestion bar is not selectable or clickable at all.