While on the page, you'll notice there is a horizontal scrollbar. If you swipe to the left, you'll see that weird empty space on the right. I was able to get this both on my iPhone 5 and the 3GS emulator on my mac.
Probably the tables or code snippets. Not much we can do about those unfortunately.
I know this is kind of late, but I had the same issue. it was solved with an overflow-x: hidden.
You should ensure that every .row div is inside a .container div
and
you should't have nested container .. row .. container structure
It worked for me:
HTML

CSS:

In my case in bootstrap.css I find a problem here...
.col-lg-1, .col-lg-10, .col-lg-11, .col-lg-12, .col-lg-2, .col-lg-3, .col-lg-4, .col-lg-5, .col-lg-6, .col-lg-7, .col-lg-8, .col-lg-9, .col-md-1, .col-md-10, .col-md-11, .col-md-12, .col-md-2, .col-md-3, .col-md-4, .col-md-5, .col-md-6, .col-md-7, .col-md-8, .col-md-9, .col-sm-1, .col-sm-10, .col-sm-11, .col-sm-12, .col-sm-2, .col-sm-3, .col-sm-4, .col-sm-5, .col-sm-6, .col-sm-7, .col-sm-8, .col-sm-9, .col-xs-1, .col-xs-10, .col-xs-11, .col-xs-12, .col-xs-2, .col-xs-3, .col-xs-4, .col-xs-5, .col-xs-6, .col-xs-7, .col-xs-8, .col-xs-9 {
position: relative;
min-height: 1px; /* comment this one or set min-height: 0px; */
padding-right: 15px;
padding-left: 15px;
}
Note: you cannot change the CDN file so, add this into you head tag. if you are using different bootstrap version then choose accordingly:) also something its a min-height issue or sometimes padding-right/left
Most helpful comment
I know this is kind of late, but I had the same issue. it was solved with an overflow-x: hidden.