724940 - Double border on Nightly's window and door hanger

Status: NEW

(Core :: Widget: Win32, defect)

Description

[alex_mayorga]

Attachment: Double border on a maximized window (second monitor on the right).

I believe those extra pixels at the bottom and right borders are what make my auto-hide Win7 task bar non un-hide when there's a maximized Nightly window is the top most window.

I suspect it is the result of some interaction of Win7 changing to basic and back to aero when doing an screen sharing session on Microsoft Office Communicator

Comment 1

[alex_mayorga]

Attachment: Double border on a maximized window (second monitor on the bottom).

Another screen capture of the mysterious border.

Comment 2

[alex_mayorga]

Attachment: Double border on a door hanger.

It's a bit harder to see, but the double border at the bottom and right are also visible on door hanger.

Comment 3

[alex_mayorga]

Attachment: Double border on a door hanger.

Easier to see on a clearer background.

Comment 4

[Stephen Horlander [:shorlander]]

Jim, do you have any idea what might be causing this?

Comment 5

[alex_mayorga]

Attachment: Double border on a door hanger.

Comment 6

[Jim Mathies [:jimm]]

(In reply to Stephen Horlander from comment #4)
> Jim, do you have any idea what might be causing this?

Some sort of a screw up in non-client calculations with multi-monitor configs.

Comment 7

[Jim Mathies [:jimm]]

(In reply to Jim Mathies [:jimm] from comment #6)
> (In reply to Stephen Horlander from comment #4)
> > Jim, do you have any idea what might be causing this?
> 
> Some sort of a screw up in non-client calculations with multi-monitor
> configs.

Actually, the door hanger bug is different - that's a drop shadow applied to a window that shouldn't have one.

Comment 8

[Jim Mathies [:jimm]]

Bas, didn't we do something weird for secondary monitors w/D2D that might be playing into this?

Comment 9

[alex_mayorga]

The exact specs in case they're relevant:

Dell Latitude E6420[1] with a Dell E177FP monitor[2] attached.

[1] http://www.dell.com/us/enterprise/p/latitude-e6420/pd
[2] http://support.dell.com/support/edocs/monitors/E177FP/en/ug/about.htm#Specifioications

Comment 10

[alex_mayorga]

(In reply to Jim Mathies [:jimm] from comment #7)
> Actually, the door hanger bug is different - that's a drop shadow applied to
> a window that shouldn't have one.

Should I file another bug?

Comment 11

[alex_mayorga]

I've now spotted a bogus border on the middle click scroll indicator too, see http://i.imm.io/GAql.png

Is this the same bug or a different one?

Comment 12

[alex_mayorga]

(In reply to Jim Mathies [:jimm] from comment #8)
> Bas, didn't we do something weird for secondary monitors w/D2D that might be
> playing into this?

Comment 13

[Bas Schouten (:bas.schouten)]

(In reply to alex_mayorga from comment #12)
> (In reply to Jim Mathies [:jimm] from comment #8)
> > Bas, didn't we do something weird for secondary monitors w/D2D that might be
> > playing into this?

We turn off shadows for D2D windows on secondary monitors. I don't know if that's related.

Comment 14

[alex_mayorga]

¡Hola Bas!

So I no longer have access to the system where this used to occur, but on a similar setup I now see https://bugzilla.mozilla.org/show_bug.cgi?id=1609129

Do you believe that one might be the same underlying cause, please?

¡Gracias!
Alex