Bug 66262 – JavaScript scrolling can break completely in specific circumstances

• Status: UNCONFIRMED
• Component: DOM

[Saul Rennison]

Created attachment 103975 [details]
Test page

window.pageYOffset, document.documentElement.scrollTop, window.scrollTo, and probably any other JavaScript scroll offset functions, do not work whatsoever when using the following CSS properties on a maximized window:

html { overflow-y: auto; }

body {
    position: absolute;
    top: 0; left: 0; bottom: 0; right: 0;
    overflow-y: scroll;
}

In addition, the window.onscroll event does not seem to be triggered. A situation in which these CSS properties would have valid use is available in the attached test page.

As stated above, this problem does not occur when the window is not maximized.

[Alexey Proskuryakov]

is this bug report about Safari, or some other browser using WebKit? I tried in Safari on Mac, and could't reproduce, but there isn't really a concept of "maximized window" on Mac anyway.