672780 - First tab hidden

Status: VERIFIED INVALID

(Firefox :: Extension Compatibility, defect)

Description

[Martin Barry]

Attachment: Screenshot. First window (left) is normal. Second window (right) first tab is missing.

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:7.0a2) Gecko/20110718 Firefox/7.0a2
Build ID: 20110718182054

Steps to reproduce:

I had two browser windows open.

Installed an add-on and restarted Firefox as requested.




Actual results:

In the second window the first tab is missing even though the page loads. You can only access it via ALT+1 or the "List all tabs" drop down.

The new tab button is on the far left, not the far right.


Expected results:

Tabs should display, new tab button should be on far right.

Comment 1

[Martin Barry]

I've also reproduced this with a nightly from the Ubuntu PPA (8.0~a1~hg20110719r72955+nobinonly-0ubuntu1~umd1~natty).

Comment 2

[Tyler Downer [He/Him]]

what addon did you install? do you see this without that addon installed?

Comment 3

[Martin Barry]

Restarting in safe mode this error does not occur.

However, only disabling the most recent add-on does not make it go away.

By process of elimination it's the Readability add-on.

Comment 4

[Tyler Downer [He/Him]]

Please report to the developers of the readibility addon.

Comment 5

[Martin Barry]

Done. Apologies for wasting your time.

Comment 7

[Paul O'Shannessy [:zpao] (not bugmail, email directly)]

I also reported this to them last week. I didn't see anything pop out at me in the code, but it was definitely that extension.

Comment 8

[Bill his name]

For information if anyone has this about now 4 July 2012

This or similar has surfaced again with addon/bypassadfly apparently the culprit 
 All calm seems restored on removing addon/bypassadfly and restarting.

I am currently using linux livedvd Mint 13 MATE "FF 12.0 - FF for mint 1.0"

Neither the drop-down tab-list icon, nor the group-tabs icon visible 
unless using "customize" (when they aren't active)

These icons can be customize-moved in-board, then they stay accessible & functional.

However, the first tab of each page is invisible, apparently gone off to the left of display,
and the newtab just showing as a plain + rather than a + in tab's clothing.


** More worrying: I had an instance of file manager in my Mint panel, and the proper icon of nautilus changed to the dark house of FF. Creepy. Killed it & reloaded file manager, the proper icon restored. Who knows what other hidden mischief my have transpired.

I can't help but feel that it should *not be possible* for an add-on to step outside in this way, it could be exploitable.

Comment 9

[Bill his name]

I spoke too soon.
Customize no longer works.