287613 - Tooltips still appear sometimes when they shouldn't

Status: NEW

(Core :: XUL, defect)

Description

[Warner Young]

I think this is related to bug 284009 and bug 283757.  In fact, it's basically
the same bug, except that it's now harder to reproduce.

To reproduce:
1. Bring up Firefox help.
2. Hover over the Customize button in the toolbar so that when the tooltip
appears, it is partially over the Customize button, and partially over the
content window.
3. Move the mouse quickly out of the toolbar and into the content window.  If
you do it right, you'll see the tooltips disppear briefly, but the Customize
button will still be "raised", as if you were still hovering over it.  A moment
later, the tooltip for Customize will appear again.

I don't know how important it is that the tooltip is halfway over the Customize
button and content window.  I've been seeing this problem on and off randomly
for a couple of weeks now, but I was only able to figure out steps to
semi-reliably reproduce it today.  I'm guessing that having the cursor cross
over the tooltip itself may be causing a case where some mousemove event isn't
getting propagated correctly, but that's just a wild guess.

The help window isn't the only place where this happens.  It also occurs with
tabs.  However, I was able to reproduce it more easily in the help window.

Seeing this with Firefox trunk build 2005-03-24 nightly on WinXP.

Comment 1

[Jerry Baker]

If this is the same problem I see in both Thunderbird and Firefox, it seems that
the applications continue to display tooltips even when they do not have focus.
Sometimes if I have an application window open on top of Thunderbird or Firefox,
a tooltip will appear on top of that application apparently triggered by an
element that is under the active application.

Comment 2

[Warner Young]

I'm not sure if it's the same problem, but I've seen the same thing: even when
another application is on top and has focus, Firefox will sometimes display a
tooltip even when its window is covered.

Comment 3

[Warner Young]

I'm not sure if it's the same problem, but I've seen the same thing: even when
another application is on top and has focus, Firefox will sometimes display a
tooltip even when its window is covered.

Comment 4

[Jerry Baker]

This is not limited to Firefox. Changing product and component.

Comment 5

[Jerry Baker]

What appears to be happening is that somehow Firefox and Thunderbird are still
getting the mouse pointer coordinates even though they are not in focus. That
means if you have another window overlaying the Thunderbird window (Notepad for
example), Thunderbird still seems to know when the mouse is over some element
directly under the Notepad window and it pops up a tooltip over the Notepad window.