Are .setContentTitle and .setCustomContentView mutually exclusive?

Trying to create android notifications with a custom body provided by an XML file. When I try to set the title of these notifications, it does not appear.

Oddly, the subtext continues to show just fine.

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Showing a standard notification (no CustomContentView), and

        builder.setContentTitle("foo");
        builder.setSubText("bar");
        // builder.setCustomContentView(customNotificationView);

Both the title and subtext show.

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If I set it to use a custom view, the title disappears. (and instead shows app name)

        builder.setContentTitle("foo");
        builder.setSubText("bar");
        builder.setCustomContentView(customNotificationView);

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Am I missing something? Does Android just not use ContentTitle when you have any kind of CustomView?

I assume what's happening is that the 'content' title is getting removed because we're replacing the 'content' with a new view.

Is there any way to give a notification with custom content a "native" title? (instead of adding text inside the RemoteView that we treat as the title).

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misc notes

• using AndroidX versions (import androidx.core.app.NotificationCompat;)
• The title is removed whether or not I add a decorated style (.setStyle(new NotificationCompat.DecoratedCustomViewStyle());
• • The title is removed whether or not I set the custom view via .setContent or .setCustomContentView

from Are .setContentTitle and .setCustomContentView mutually exclusive?