146941 - Folders in Bookmarks Lost when moving into other folders

Status: RESOLVED WORKSFORME

(SeaMonkey :: Bookmarks & History, defect)

Description

[jfisher+bugzilla]

In "Manage Bookmarks" moving folders around seems to (occasionally) delete the
folder. Noticed this in RC1, and have reproduced it multiple times in RC3. 
Similar behavior to BUG #138557.

Moving folders around in the root level was not a problem. However when moving a
folder into another one, the folder being moved would just disappear, along with
all its bookmarks. This would never happen with individual bookmarks, just with
folders. For most frequent disappearances, both folders should have a couple
items and be expanded (hit the +), although once an empty non-expanded
destination folder produced the same results.

The following steps were taken to produce the bug:
Open Manage Bookmarks
click on a separator
create folder aaa
create folder bbb
go to mozilla.org
add page to aaa
click RC3 link, add page to aaa
click Developer Docs, add page to bbb
click Introductory Material, add page to bbb
expand aaa, bbb
move aaa into bbb (WORKS)
move aaa out of bbb
move aaa into bbb (aaa is gone)

Sometimes this would happen on the 20th move instead of the second. Other times
I could go on for a while and nothing went wrong. Would close and reopen Manage
Bookmarks, and continue moving, then it would disappear.

A couple times the bookmarks in the destination folder would become blank (no
name or location) - however closing and reopening the Bookmarks window fixed that.

I did have other non-default bookmarks and folders below and above the spot
where I tried this, although I had more before I discovered this.

Comment 1

[Pierre Chanial]

There have been some changes concerning DND in the BM.
Can you still reproduce it on a recent trunk build?

Comment 2

[Pierre Chanial]

Marking WFM, please reopen is you still see the problem.