If I may....
Kontakt page - as you know is not a ARTICLE view, but it's a Page made in SP Page Builder that's why by default DO NOT have any extra paddings (gaps)! and this is not a bug, it was designed to be like that with purpose.
If you want to add top padding only to that "Kontakt" subpage please use following Custom CSS:
.com-sppagebuilder.itemid-152 #sp-main-body {padding-top: 100px !important;}
if for all Pages made in SPPB.
.com-sppagebuilder #sp-main-body {padding-top: 100px !important;}
Is everything clear?