wyswig editor cutom field in text mode on gutenberg page

I noticed some bug reports on the WYSIWYG editor, so I am not 100% sure if this already has been reported.

I can't edit WYSIWYG content in text mode:

I created the following custom field via the visual editor:

<?php
add_filter( 'rwmb_meta_boxes', 'your_prefix_function_name' );

function your_prefix_function_name( $meta_boxes ) {
    $prefix = '_akdev_';

    $meta_boxes[] = [
        'title'      => __( 'Page Banner', 'your-text-domain' ),
        'id'         => 'page-banner',
        'post_types' => ['page'],
        'include'    => [
            'relation' => 'OR',
            'template' => ['template_page-banner.php'],
        ],
        'validation' => [
            'rules' => [
                $prefix . '_akdev_cta_text' => [
                    'required' => true,
                ],
                $prefix . '_akdev_cta_url'  => [
                    'url' => true,
                ],
            ],
        ],
        'tabs'       => [
            '_akdev_text_tab' => [
                'label' => 'Text',
                'icon'  => 'text',
            ],
            '_akdev_cta_tab'  => [
                'label' => 'Call to action',
                'icon'  => 'admin-links',
            ],
        ],
        'fields'     => [
            [
                'id'   => $prefix . 'banner_text',
                'type' => 'wysiwyg',
                'tab'  => '_akdev_text_tab',
            ],
            [
                'id'     => $prefix . 'banner_cta',
                'type'   => 'group',
                'fields' => [
                    [
                        'name'        => __( 'Text', 'your-text-domain' ),
                        'id'          => $prefix . 'cta_text',
                        'type'        => 'text',
                        'placeholder' => __( 'Call to action', 'your-text-domain' ),
                        'required'    => true,
                    ],
                    [
                        'name'        => __( 'Link', 'your-text-domain' ),
                        'id'          => $prefix . 'cta_url',
                        'type'        => 'url',
                        'placeholder' => __( 'https://example.com', 'your-text-domain' ),
                        'required'    => true,
                    ],
                ],
                'tab'    => '_akdev_cta_tab',
            ],
        ],
    ];

    return $meta_boxes;
}