210878 - Can't scroll page using keys or mousewheel.

Status: VERIFIED DUPLICATE of bug 97283

(Core :: DOM: UI Events & Focus Handling, defect)

Description

[Adam D. Moss]

This page can't be scrolled using the arrow or space or pgup/pgdown keys
on Linux-x86/GTKFE, with either Mozilla trunk or MozillaFirebird trunk.

It seems to be a fairly ordinary page; no frames.  Clicking within the
page content area before scrolling does not help matters, so it's
(probably) not a simple issue of keyboard focus.

It mostly just seems to happen with this site/page, I haven't noticed the
problem elsewhere.

Comment 1

[Shark Daddy (Jonathan L.)]

Confirmed on Win2K.

Same deal with mousewheel.

Comment 2

[Adam D. Moss]

(I forgot to mention, of course: mousing the window's scrollbar still works fine.)

Comment 3

[Aaron Leventhal]

Notes: you can tab through the controls and scroll that way. The same page works
correctly in IE. You can use caret browing mode (F7) and the page will scroll as
you move the caret past the bottom line.

Comment 4

[Adam D. Moss]

Another data point: this has been happening for months.  (It might have been
happening forever, but my memory gets all misty further back than a few
minu^H^H^H^Hmonths.)

Comment 5

[Adam D. Moss]

MozillaFirebird's 'autoscroll' is also inoperative on this page (it doesn't
cause any scrolling).

Comment 6

[Aaron Leventhal]

Attachment: Simplified test case. Can't scroll using keyboard/mousewheel.

The key is the following CSS:
BODY
{
    MARGIN: 0px;
    OVERFLOW: auto;
    HEIGHT: 100%;
}
Remove any of those lines and it is scrollable.

If you remove MARGIN: 0px a second scrollbar appears which you can use to
scroll.

Comment 7

[Aaron Leventhal]

More notes:

overflow: scroll still produces the problem
height: 50% still produces the problem

If you don't set the margin, you can scroll up and down the outer scroll bars,
but not the inner scroll bars. So, that doesn't really get rid of the problem
either.

Clicking in the scrollable region doesn't help, so it's not a focus problem.

CC'ing various folks who might have a clue what to do about this problem.

Comment 8

[Aaron Leventhal]

CC'ing various folks who might have a clue what to do about this problem. It's a
layout/view problem no?

Comment 9

[Aaron Leventhal]

*** This bug has been marked as a duplicate of 97283 ***

Comment 10

[Henrik Skupin [:whimboo][⌚️UTC+1]]

verified.