200045 - smoothScroll causes "Advance to next unread message" message after every screenful in preview pane

Status: RESOLVED DUPLICATE of bug 198987

(Core :: Web Painting, defect)

Description

[Dave Croal]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4a) Gecko/20030329
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4a) Gecko/20030329

When I scroll my mail in the preview pane using spacebar=pagedown I get an
"Advance to next unread message" box after every screenful. This should only
happen when I reach the end of the message. This behaviour went away when I
turned smoothScroll off.

Reproducible: Always

Steps to Reproduce:
1.Enable smoothScroll via user_pref("general.smoothScroll", true);
2.Problem
3.Disable smoothScroll via user_pref("general.smoothScroll", false);
4.Problem gone
Actual Results:  
When I scroll my mail in the preview pane using spacebar=pagedown I get an
"Advance to next unread message" box after every screenful.

Expected Results:  
This should only happen when I reach the end of the message.

Related to #174049 I think

Comment 1

[Christopher Blizzard (:blizzard)]

I see this as well.  Also, you can see a similar effect if you use the
mousewheel over the ports iframe on tinderbox (both the frame and the containing
windows scroll!)  Are we not cancelling an event across frames?

Comment 2

[Christopher Blizzard (:blizzard)]

-> browser

Comment 3

[Christopher Blizzard (:blizzard)]

-> roc

Comment 4

[Dave Croal]

It happens when the message is opened in it's own window too, not just in the
preview pane

Comment 5

[Sander]

The iframe problem from comment 1 is bug 199024

*** This bug has been marked as a duplicate of 198987 ***