public static function title_meta_field() {
		global $post, $pagenow, $typenow;

		if ( has_blocks( $post ) || ( function_exists( 'use_block_editor_for_post' ) && use_block_editor_for_post( $post ) ) ) {
			return;
		}

		if ( ! is_admin() ) {
			return;
		}

		if ( 'popup' == $typenow && in_array( $pagenow, array( 'post-new.php', 'post.php' ) ) ) { ?>

			<div id="popup-titlediv" class="pum-form">
				<div id="popup-titlewrap">
					<label class="screen-reader-text" id="popup-title-prompt-text" for="popup-title">
						<?php esc_html_e( 'Popup Title', 'popup-maker' ); ?>
					</label>
					<input tabindex="2" name="popup_title" size="30" value="<?php echo esc_attr( get_post_meta( $post->ID, 'popup_title', true ) ); ?>" id="popup-title" autocomplete="off" placeholder="<?php esc_html_e( 'Popup Title', 'popup-maker' ); ?>" />
					<p class="pum-desc"><?php echo '(' . esc_html__( 'Optional', 'popup-maker' ) . ') ' . esc_html__( 'Shown as headline inside the popup. Can be left blank.', 'popup-maker' ); ?></p>
				</div>
				<div class="inside"></div>
			</div>
			<script>jQuery('#popup-titlediv').insertAfter('#titlediv');</script>
			<?php
		}
	}