What i did for the moment and it works is that i changed lines 111-113 at includes/widget-recent-posts-extended.php file from:
<?php if ( $date == true ) { ?>
<time class=”rpwe-time published” datetime=”<?php echo esc_attr( get_the_date( ‘c’ ) ); ?>” pubdate><?php echo esc_html( get_the_date( $date_format ) ); ?></time>
<?php } ?>
to:
<?php if ( $date == true ) { ?>
<time class=”rpwe-time published” datetime=”<?php echo esc_attr( get_the_date( ‘c’ ) ); ?>” pubdate><?php echo get_the_date(); ?></time>
<?php } ?>