ACF Gut block broke wordpress default style?

When I add a new custom ACF gut block, he broke the default WP style:

After adding a custom block:

Example of ACF block:

acf_register_block_type(array(
            'name'              = 'rte-module',
            'title'             = __('RTE Module'),
            'description'       = __('A custom RTE module block.'),
            'render_template'   = 'template-parts/blocks/rte-module.php',
            'category'          = 'rte-module',
            'icon'              = 'admin-comments',
            'keywords'          = array( 'rte', 'module', 'text' ),
            'mode'              = 'edit',
            'supports'          = array('mode' = false),
            'example'  = array(
                'attributes' = array(
                    'mode' = 'preview',
                    'data' = ['is_example' = true]
                )
            )
        ));