Steps to reproduce the issue

0. occurs in all delivered standard templates - beez3, vmbeez3, protostar
1. a. content->articles->new article - options don't matter
   type a few lines and/or insert an image not higher than inner.screen.hight
   b. content->articles->new article - options don't matter
   type 100 lines and/or insert an image !higher! than inner.screen.hight
   c. add corresponding menus

Expected result

if you click through the menu items the -> .body .container -> leaves unchainged

Actual result

if you click through the menu items the -> .body .container -> changes position to the left 15px depending on article height > inner.screen.height

System information (as much as possible)

Windows7 x64 -- IIS7.5 -- Php7.2 -- MySQL8.0.13x64 command-line --

Additional comments

it depends on
.row-fluid .span9 {
width: 74.468085099%;
width: 74.414893609638%;
/ height:3000px; added Bangert*/