606435 - Lost Tab After drag & drop tab in tabstrip and using Panorama

Status: VERIFIED FIXED

(Firefox Graveyard :: Panorama, defect)

Description

[Alice0775 White]

Build Identifier: 
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b8pre) Gecko/20101021 Firefox/4.0b8pre ID:20101021042123

Lost Tab After drag & drop tab in tabstrip and using Panorama.
It is *often*.

Steps to Reproduce(For exsample):

1. Start Minefield with new pofile
2. Open 3 tabs (now [ A ][ B ][ C ][+])
3. Pinned 1st and 2nd tab (now [A][B][ C ][+])
4. Enter Panorama, and exit Panorama
5. Drag & drop 1st pinned tab to left sideof [+]  (now [B][ C ][ A ][+])
6. Enter Panorama
7. Close a Group([B] and [ c ])
8. Move border of right-bottom corner of remaining tab[A](maybe) by mouse dragging
9. Wait for a while

Actual Results after step9:
  No tab in Panorama

10 Exit panorama

Actual Results after step10:
 tab [ A ] will be lost forever

Expected Results:
 The tab should not be lost.

Comment 1

[Mardeg]

Workaround to mitigate "lost forever":
http://blog.zpao.com/post/1368669319/reset-panorama-from-the-error-console

Comment 2

[Kevin Hanes]

Can you provide a screenshot of what your Panorama UI looks like after this? It sounds similar to bug 606429. These bugs will probably be solved by bug 598600.

Comment 3

[Alice0775 White]

Attachment: screenshot after step9

Comment 4

[Alice0775 White]

Attachment: screenshot after step10, lost tab A, There is only tab B

Comment 5

[Kevin Hanes]

Ah! Thank you, it has become more clear to me what is going on. When you are closing your groups, you still have an app tab floating around, and we don't account for it in the UI. This isn't a dupe of bug 596781, though it should be fixed by it.

Comment 6

[Ian Gilman [:iangilman]]

Bug 596781 has landed, so this should no longer be possible.

Comment 7

[Dietrich Ayala (:dietrich)]

belated blocking+ for dataloss.

Comment 8

[Tracy Walker [:tracy]]

These exact steps are too contrived for a litmus case.  However, the general case fo app tab retention is covered through various existing test cases.