60580 - Drop down menu behaviour in combination with wheel mouse scrolling is weird

Status: VERIFIED DUPLICATE of bug 33733

(Core :: Layout: Form Controls, defect, P3)

Description

[a.haakmat]

Build ID: 2000111708

When invoking any page with a <select>...</select> group, Mozilla draws
drop-down widgets to display the <select> group. Now:

1. Open a dropdown menu.
2. Place the mouse over any of the items in the dropdown menu, but not over the
scrollbar area.
3. Use the scroll wheel on the mouse.

Actual results: the page starts scrolling while the dropdown menu is still open,
causing all kinds of weird artifacts.

Expected results: using the scroll wheel on any part of a drop down menu should
scroll the drop down menu, not the page that it is on.

Comment 1

[Peter Trudelle]

->HTML Form Controls, ->bryner for triage.

Comment 2

[Jesse Ruderman]

probably a dup of bug 33732

Comment 3

[R.K.Aa.]

indeed. Marking as such.
33732 "[MW]Mousewheel scrolling scrolls listbox, not page"


*** This bug has been marked as a duplicate of 33732 ***

Comment 4

[a.haakmat]

Attachment: What happens when using the mousewheel to scroll an opened dropdown menu.

Comment 5

[a.haakmat]

Looking over the discussion for 33732, I am not sure if this bug is a duplicate
of 33732. The discussion on 33732 seems to focus on Windows NT and mouse
drivers, neither of which is the case here (Linux and X Windows ZAxisMapping).

Also, 33732 ("[MW]Mousewheel scrolling scrolls listbox, not page") seems to be
the exact opposite of what I am seeing, which is that using the mousewheel over
an opened popup scrolls the page, and not the popup (that is, the popup menu is
open. I have attached a screenshot of the problem.

Reopening, please confirm that this is indeed a duplicate. Sorry if I am wasting
your time.

Comment 6

[Brian Ryner (not reading)]

*** This bug has been marked as a duplicate of 33733 ***

Comment 7

[Hans Peter Groendal]

Verified, this is a duplicate of bug 33733 "Pulldown list does not go away on
mousewheel action."