Suitebar is moving on quick launch link click

I have a long page with many headings in the content area. The quick launch is set up with those headings as adress in the anchor tags.

<a class="static menu-item ms-core-listMenu-item ms-displayInline ms-navedit-linkNode" tabindex="0" href="#peoplelookbook"><span class="additional-background ms-navedit-flyoutArrow"><span class="menu-item-text">people lookbook+</span></span></a>

When I click the menu item, the site jumps to the right heading in the content. But the suitebar slips a little bit out of the window. Someone can help me to get this right?