Transparent / Transparent Activity in Android Wear Lollipop

I had translucent work backgrounds running on Android Wear 4.4W without specifying a theme and setting the background in the action layout to # BB000000.

Now I have Android Wear 5.0.1, the background is not transparent, and strange effects occur with the foreground elements appearing in random places in the background, and bouncing - completely messed up.

I tried to use a custom theme like this:

<style name="Theme.Transparent" parent="android:Theme.DeviceDefault">
    <item name="android:windowIsTranslucent">true</item>
    <item name="android:windowBackground">@android:color/transparent</item>
</style>

      

        
        
        
      

    

I have also tried using

android:theme="@android:style/Theme.Translucent"

      

        
        
        
      

    

Both with no luck - the same weird opaque effects.

My activity layout looks like this:

<android.support.wearable.view.BoxInsetLayout
   xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:app="http://schemas.android.com/apk/res-auto"
   android:background="#BB000000"
   android:layout_height="match_parent"
   android:layout_width="match_parent">

   <FrameLayout
       android:id="@+id/frame_layout"
       android:layout_height="match_parent"
       android:layout_width="match_parent"
       app:layout_box="left|bottom|right">

       <android.support.wearable.view.WearableListView
           android:id="@+id/wearable_list"
           android:layout_height="match_parent"
           android:layout_width="match_parent">
       </android.support.wearable.view.WearableListView>
      </FrameLayout>
</android.support.wearable.view.BoxInsetLayout>

      

        
        
        
      

    

Anyone ideas?