46497 - [CBX]Can't scroll down a long list menu in a form

Status: RESOLVED DUPLICATE of bug 27315

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

Description

[Bob Kanefsky]

From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 5.0; Mac_PowerPC)
BuildID:    2000072408

Selecting an item from a long list menu is not possible in the standard 
MacOS way.   By trial and error I finally found that there's a way to do it:  
although the scroll bar won't work while the mouse is down, and the 
menu disappears when the mouse is released over an item, the menu 
stays up ifthe mouse is moved over the scrollbar and released.  The 
scrollbar can then be used, and an item selected.  This is unexpected and 
confusing behavior, though.

I assume that the impending "native widget" code removal described in 
bug 5551 has long since happened, and that this is a bug in the new 
code that replaced it.

Reproducible: Always
Steps to Reproduce:
1. Go to the Bugzilla Helper page.
2.  Scroll the page until the Component menu is visible.
3.  Place the mouse over the scroll-arrow control and press gently to pull 
down the menu.
4.  With the button held down, move the mouse to the lowest visible item 
and beyond.  It won't scroll, although there's some unreproducible motion 
that causes it to scroll by one item.
5.  Try using the scrollbar on the right.    It won't respond.
6.  Release the mouse.


Actual Results:  Whether the menu stays up depends on where the 
mouse is when the button is released.  If it's over the scrollbar, the menu 
stays up, like a modal dialog box rather than a popup menu, and the 
scrollbar becomes active.  If it's over an item, the menu disappears and 
the item is selected.

Expected Results:  Moving the mouse past the last (or first) visible item 
should scroll down (or up).

Comment 1

[Ludovic Hirlimann]

Behavior described is fine on winNt with Build ID
2000072520

Comment 2

[Jeffrey Baker]

Confirmed on Linux 2000072521.  Drag scrolling doesn't work right if it is done
with the same mousedown that opened the widget.

Comment 3

[Bob Kanefsky]

Could this be related to Most Frequent Bug 16766?  Not sure.

Comment 4

[Kevin McCluskey (gone)]

Triaging rods bug list.
Setting Milestone to M22

Comment 5

[bsharma]

Updating QA contact.

Comment 6

[rods (gone)]

I think this is a dup, the idea is to be able to drag of the end and have it 
keep scrolling

*** This bug has been marked as a duplicate of 27315 ***

Comment 7

[Bob Kanefsky]

It is indeed closely related to Bug #27315.  The difference is that this one says 

that it selecting a single item is confusing, while Bug #27315 says that a 

familiar shortcut for selecting multiple adjacent items is missing.  It's likely 

that a single code change would address both bugs, but not necessarily so.