Why does my Android EditText context menu display incorrectly?

Question

My Android game (NativeActivity) opens a system dialog with an EditText field for text entry. The dialog opens fine and the text is editable, but when I select some text in order to cut/copy, the EditText context menu appears to draw outside its bounds and I don't understand why.

I've attached two images. The first one shows the dialog when it opens. The second one shows what happens when text is selected and the context menu pops open.

Dialog Box

EditText Context Menu

Here's my styles.xml file.

<resources>
<!-- Popup Dialog Theme -->
<style name="MyDialogTheme" parent="Theme.AppCompat.DayNight.Dialog.Alert">
 <item name="android:windowBackground">@color/MyDialogBackground</item>
 <item name="android:textColorHint">@color/MyDialogLabel</item>
 <item name="android:textColor">@color/MyDialogText</item>
 <item name="android:dialogCornerRadius">24dp</item>
 <item name="android:backgroundTint">@color/MyDialogBackground</item>
 <item name="android:backgroundTintMode">src_over</item>
 <item name="android:alpha">0.9</item>
</style>

• Mike M.: How are you handling the theme for the Dialog? That looks like what happens when android:background is set in the theme, which causes that background to be set on every View. It's often confused for android:windowBackground.
• Bungles: Thanks Mike M. Your insight was spot-on. In this case I had defined backgroundTint and backgroundTintMode, assuming they'd apply to the window background.