"Edit layout" form missing revision log message field
I've added my initial patch to the issue - https://www.drupal.org/project/drupal/issues/3033516#comment-13136184

Adding this chunk to the init method of the OverridesEntityForm seems to do the trick, at least for nodes. We'll see what core maintainers come back with, but hopefully this can help you in the meantime.

  /**
   * {@inheritdoc}
   */
  protected function init(FormStateInterface $form_state) {
    parent::init($form_state);

    $form_display = EntityFormDisplay::collectRenderDisplay($this-&gt;entity, $this-&gt;getOperation(), FALSE);
    $form_display-&gt;setComponent(OverridesSectionStorage::FIELD_NAME, [
      'type' =&gt; 'layout_builder_widget',
      'weight' =&gt; -10,
      'settings' =&gt; [],
    ]);

    $section_storage = $this-&gt;getSectionStorage();
    $entity = $section_storage-&gt;getContextValue('entity');
    $entity_type = $entity-&gt;getEntityType();
    if ($entity_type-&gt;isRevisionable()) {
      $revision_log_message_form_item = $entity_type-&gt;getRevisionMetadataKey('revision_log_message');
      $log_field_definition = $entity-&gt;getFieldDefinition($revision_log_message_form_item);
      $log_field_revision_message_form_data = $log_field_definition-&gt;getDisplayOptions('form');
      $form_display-&gt;setComponent($revision_log_message_form_item, $log_field_revision_message_form_data);  
    }

    $this-&gt;setFormDisplay($form_display, $form_state);
  }