I have solved the issue.Problem is not on wordpress update.You may did wrong on another place like if you run any loop first you end it using <?php endwhile; wp_reset_postdata(); ?> for while loop and <?php endforeach; wp_reset_postdata(); ?> for for loop. then all will work fine.if you do not end them perfectly it can not execute the query below it.
Another thing you may try is
<?php if( get_field(‘bottom_title’) ): ?>
<?php the_field(‘bottom_title’); ?>
<?php endif; ?>