I ran into this too. It turns out the issue was caused by setting the hint text on the EditText nested inside the TextInputLayout.

I did some digging and found this nugget in the 26.0.0 Beta 2 release notes. Android Support Release Notes June 2017

TextInputLayout must set hints on onProvideAutofillStructure()

That led me to try setting the hint on the TextInputLayout instead of the nested EditText.

This resolved the crashing issue for me. Example:

<android.support.design.widget.TextInputLayout
    android:id="@+id/textInputLayout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="Some Hint Text"
    android.support.design:hintAnimationEnabled="true"
    android.support.design:hintEnabled="true"
    android.support.design:layout_marginTop="16dp">

    <android.support.design.widget.TextInputEditText
        android:id="@+id/editText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

</android.support.design.widget.TextInputLayout>

I posted this as an answer here as I mixed up bookmarks. Sorry for posting the same answer twice.