460725 - overflow:hidden should completely prevent the user from scrolling

Status: RESOLVED DUPLICATE of bug 295020

(Core :: Layout, defect)

Description

[Carlo Alberto Ferraris]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; it; rv:1.9.0.3) Gecko/2008092417 Firefox/3.0.3 FirePHP/0.1.2
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; it; rv:1.9.0.3) Gecko/2008092417 Firefox/3.0.3 FirePHP/0.1.2

According to the CSS specs, when overflow is set to hidden, the user should not be able to scroll the element at all. Currently, this is true only for wheel scrolling: using the keyboard or the autoscroll any element having overflow:hidden scrolls, even if no scrollbars are displayed.

Reproducible: Always

Comment 1

[Daniel.S]

Thanks for reporting.

What CSS says is, "that no scrolling user interface should be provided to view the content outside the clipping region".
It doesn't speak of diallowing the user to scroll. At least it's unclear.

http://www.w3.org/TR/CSS21/visufx.html#propdef-overflow

Anyway, I'm not the one to decide. The discussion is in Bug 295020.