Why doesn't setOnClickPendingIntent fire in Android 7.0 Nougat in a notification?

Question

Android

This code (see below) works fine in API below and above 24. Doesn't work only in Android 7.0 Nougat. Question: why and how to fix it?
Create a custom notification:
layout.control_notification.xml

<FrameLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:id="@+id/notify_button"
  android:layout_width="match_parent"
  android:layout_height="match_parent"/>

We hang a handler on a click on the notification area:

RemoteViews remoteViews = new RemoteViews(getPackageName(), R.layout.control_notification);

Intent actionIntent = new Intent(ACTION_NOTIFICATION_BUTTONS);
remoteViews.setOnClickPendingIntent(R.id.notify_button,
  PendingIntent.getBroadcast(
      this,
      1,
      actionIntent,
      PendingIntent.FLAG_UPDATE_CURRENT
  ));

NotificationCompat.Builder builder = new NotificationCompat.Builder(this, CONTROL_CHANNEL_ID)
  .setContent(remoteViews)
  .setSmallIcon(R.drawable.ic_notification)
  .setPriority(NotificationCompat.PRIORITY_HIGH);

A notification is issued via startForeground. On clicks on notifications under the 7th does not respond. I checked both on the phone and on the emulator.
There is a similar question on stackoverflow , but no solution. The answer proposed by the author with the addition of the following code to the markup did not help me in any way.

android:focusable="true"
android:clickable="true"

Answer 1

Managed to solve the problem myself.
The bug is clearly visible on the emulator, where you can make any number of clicks on the same point. The essence of the bug is that clicks in the custom notification area are periodically lost. There are such points where you can stick to infinity until you move the mouse. All this is random.
It looks like this bug is related to internal optimization, redundant. If the root layout is empty, then the click handler will not be hung on it at all via setOnClickPendingIntent. If not empty, then clicks are random.
To remove the bug, it is enough to add an element of type Button/ImageButton to the markup. Just add it without hanging a click handler on it, and then clicks on all other elements on which setOnClickPendingIntent is hung will work normally.
An example of a broken markup where the only fix is ​​to uncomment the ImageButton.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:orientation="horizontal"
  tools:layout_height="64dp">

  <FrameLayout
    android:id="@+id/button_1"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_weight="1"
    android:background="@color/colorPrimaryDark">

    <ImageView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_gravity="center"
      android:src="@drawable/ic_notify_1"/>
  </FrameLayout>

  <FrameLayout
    android:id="@+id/button_2"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_weight="1"
    android:background="@color/colorPrimaryDark">

    <ImageView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_gravity="center"
      android:src="@drawable/ic_notify_2"/>

    <!--<ImageButton
      android:layout_width="64dp"
      android:layout_height="64dp"
      android:layout_gravity="center"
      android:layout_margin="0dp"
      android:padding="0dp"
      android:src="@drawable/ic_notify_2"/>-->
  </FrameLayout>
</LinearLayout>