IssueTracker

The support library uses VectorDrawableCompat  for devices smaller than api level 23 although it is available on 21+.

A corresponding comment in the support library code is also wrong:

android.support.v7.widget.AppCompatDrawableManager#installDefaultInflateDelegates

It states:

        if (sdk < 23) {
            // We only want to use the automatic VectorDrawableCompat handling where it's
            // needed: on devices running before Lollipop
            manager.addDelegate("vector", new VdcInflateDelegate());

            if (sdk >= 11) {
                // AnimatedVectorDrawableCompat only works on API v11+
                manager.addDelegate("animated-vector", new AvdcInflateDelegate());
            }
        }

That should 21 not 23 to be in line with the comment.