Several loops in sidebar issues

Have you tried calling <?php wp_reset_postdata(); ?> after the ehdwhile; for each custom loop?

EDIT

Next step is to try calling <?php wp_reset_query(); ?> instead of <?php wp_reset_postdata(); ?> after the ehdwhile; for each custom loop.

Note: see here for a nice explanation of the different ways to reset the WordPress loop.

Note 2: problem is caused by sticky post with title ‘under construction’