591414 - Closed tabs keep showing in the windows 7 taskbar preview

Status: RESOLVED DUPLICATE of bug 591135

(Firefox :: Shell Integration, defect)

Description

[Cristhian Benitez]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; rv:2.0b4) Gecko/20100818 Firefox/4.0b4
Build Identifier: Mozilla/5.0 (Windows NT 6.1; rv:2.0b4) Gecko/20100818 Firefox/4.0b4

Closed tabs keep showing when i go over the firefox icon in the windows taskbar.
I have this issu several times, but only after using firefox for long times.
Cant find steps to reproduce it, but it keep hapening.
I cant close the tabs in the taskbar, when i click it, i see a black rectangule

Reproducible: Sometimes

Actual Results:  
Have a screenshot, i will attach it

Comment 1

[Cristhian Benitez]

Attachment: The Infoweek tab was closed

Comment 2

[Alex Z.]

I've observed this as well. In addition, the actual content in the preview tab varies as well. Sometimes it shows the actual preview (as in the screenshot), other times it just shows the loading symbol. The frequency seems to increase the longer FF is running

Mozilla/5.0 (Windows NT 6.1; rv:2.0b6) Gecko/20100101 Firefox/4.0b6

Comment 3

[Wes Kocher (:KWierso) (Not reading bugmail; email directly if needed)]

Bug 591135 is a duplicate of this, or vice versa.

Comment 4

[Cristhian Benitez]

yes it is