<p dir="auto">I have found that the class "modal-open" is being applied too late to the body tag. Because of this, there is a brief appearance of double scroll bars. This is happening in Firefox (22.0) and Chrome (28.0.1500.72 m), both desktop. It happens in IE10 as well but because of the scroll bars overlaying content it is not noticeable.</p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://camo.githubusercontent.com/48bfce860c17e49d11b4b1b5a320a87b40425712df93214115af8d7c45654676/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f3937363935312f3836393738382f37656338363733342d663831332d313165322d393632312d3733613362303331373338622e706e67"><img src="https://camo.githubusercontent.com/48bfce860c17e49d11b4b1b5a320a87b40425712df93214115af8d7c45654676/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f3937363935312f3836393738382f37656338363733342d663831332d313165322d393632312d3733613362303331373338622e706e67" alt="bootstrapmodalbug" data-canonical-src="https://f.cloud.github.com/assets/976951/869788/7ec86734-f813-11e2-9621-73a3b031738b.png" style="max-width: 100%;"></a></p>
<p dir="auto">Hi, sorry for bad English. I want to tell that there is issue with opened modal (2 scrollbars) if javascripts included in head and not in the end of page as assumed in examples. The reason is here <a href="https://github.com/twbs/bootstrap/blob/3.0.0-wip/js/modal.js#L238">https://github.com/twbs/bootstrap/blob/3.0.0-wip/js/modal.js#L238</a> $body is empty</p>