private function make_block_visible( $block, $blocks, $block_index ) {

		if ( LLMS_Forms::instance()->is_block_visible_in_list( $block, array( $blocks[ $block_index ] ) ) ) {
			return $blocks;
		}

		// If the block has a confirm group, use that.
		$confirm = $this->get_confirm_group( $block['attrs']['id'], array( $blocks[ $block_index ] ) );

		$block_to_add = empty( $confirm ) ? $block : $confirm;

		$replace = true;
		// Insert the visible block before the invisible one if the block is in a group,
		// so to avoid the replacement of the whole group which might contain other required fields.
		// But replace the invisible with the visible if otherwise.
		if ( $block_to_add !== $blocks[ $block_index ] ) {
			$replace = false;
			$this->remove_block( $block_to_add, $blocks );
		}

		// Make the block to add and its children visible.
		$block_to_add = $this->make_all_visible( $block_to_add );

		array_splice( $blocks, $block_index, (int) ( ! empty( $replace ) ), array( $block_to_add ) );

		return $blocks;

	}