Hi,
you can see it on a test-site
test.grenzenlos-unterwegs.de
Depending on resolution and monitor the effect can be detected.
The best way is to make the window slightly smaller until the edge is as close as possible to the menu "Plans". When "Plans" is opened, you see "2018". If you then open "2018", "Berlin-Baikal-Gobi" disappears on the right.
On this page you also can see that, in my opinion, the "logo as image"is opened in the wrong container and is thus scaled too small.
best regards,
sky