Incorrect cursor positioning in Firefox.

[Arroc]

Binary package hint: firefox-3.5

From the "Organize Bookmarks" menu, when I try to drag a folder or bookmark, the destination that is highlighted is significantly above (misaligned) with the cursor. The destination folder should be exactly beneath the cursor location.

ProblemType: Bug
Architecture: i386
Date: Sat Aug 15 03:54:12 2009
DistroRelease: Ubuntu 9.10
Package: firefox-3.0 (not installed)
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-5.24-generic
SourcePackage: firefox-3.0
Uname: Linux 2.6.31-5-generic i686

[Dave Gilbert (ubuntu-treblig)]

Confirmed - just seen the same thing myself.

[Vish (vish)]

I actually has nothing to do with bookmarks.
It is just the cursor positioning is totally wrong.

To test:
1: Type text with several[>4] lines in a comments section[example: LP]
2: Now select text and drag the text

Noticed behavior:
If you have selected text in the *first three* lines of the comment box and are dragging it , the cursor is missing,
Now while dragging the text , bring down the pointer while holding the text , when the pointer is in line 3 , you will now see the cursor in line 1 ...!

Actual behavior:
Cursor should appear in the same position as the pointer[IIRC half a line above the pointer]

This problem is only specific to firefox and not in any other app.

Another issue is , when moving the cursor in the comments with arrow keys , the cursor shows a lag.[this is when firefox is open for several hrs. this is all new behavior ]

This bug should be titled properly and into how firefox handles cursor position.

[Vish (vish)]

User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.2) Gecko/20090810 Ubuntu/9.10 (karmic) Firefox/3.5.2
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.2) Gecko/20090810 Ubuntu/9.10 (karmic) Firefox/3.5.2

Problem is seen during:
1: Drag-and-drop of text in a text field [eg: comments box]
2: Drag-and-drop while organizing bookmarks

Reproducible: Always

Steps to Reproduce:
A: Drag and drop of text in a text field [eg: comments box]
For single-line text input boxes
1. Type and Select text
2. Now drag the text
3. Cursor is missing

For text input boxes which have several lines [eg: comments box]
1. Type text for several lines > 4 lines
2. Select text in the First line
3. Now drag the text in the First line
4. Cursor is missing
5. Now drag the text , from the first line , lower so that the mouse pointer is now on the 4th line
6. notice the cursor in the first line !

While organizing bookmarks:
1. select bookmark and drag it
2. Drag it over to the Left pane , to drop in a folder
3. Notice the cursor position is always higher than the pointer [about 2-3 lines higher]
Actual Results:
For single line text boxes and large input boxes:
The cursor is missing when the pointer is in the first line
and cursor is visible in first line only when the pointer in brought much lower.

For bookmarks:
Cursor is always higher than the pointer position. which leads to improper drops

Expected Results:
Cursor should always be positioned near the pointer.
Only this will allow easier and predictable drag-and-drop.

When dragging tabs , this also leads to tearing off of the tab and new windows are opened > https://bugs.launchpad.net/ubuntu/+source/firefox-3.5/+bug/413950/comments/4

These behavior is noticed only in firefox and thunderbird apps , in all other apps position the cursor is always near the pointer.

This did not happen in the previous versions of the apps.

I'v also tested with
- mozilla build of 3.5.2 and
- Ubuntu 3.7 version of firefox[ppa], the issue is present in all the versions.

Lp firefox bug > https://bugs.launchpad.net/ubuntu/+source/firefox-3.5/+bug/413950
Lp thunderbird bug > https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/403325

Also to note :
when the bookmarks are dragged within the right pane or when dragged in the bookmarks drop-down menu , the cursor is positioned correctly [near the pointer]

[Vish (vish)]

I tested this with the upstream build.
http://releases.mozilla.org/pub/mozilla.org/firefox/releases/3.5.2/linux-i686/en-US/firefox-3.5.2.tar.bz2

This problem exists with the upstream build too.

[sparr (sparr0)]

I am seeing a possibly related issue with dragging tabs, occasionally what I intend to be a horizontal drag (or even a click) will be interpreted as enough of a vertical drag to tear the tab off into a new window.

[Mozilla-bugs-micahscomputing (mozilla-bugs-micahscomputing)]

Reed added per Alexander Sack

[Tanner-sumo-bugs (tanner-sumo-bugs)]

Changing to Drag and Drop...

[Dominik George (natureshadow)]

I see this happen in Thunderbird when moving mails. but only if the folder pane has been scrolled at leasrt once after startup.

[Norbert Nemec (nnemec)]

Same for me:
firefox 3.5 and thunderbird 2.0.0 show the same problem.
[Kubuntu (Jaunty+some updates to Karmic) on two different machines]
The size of the vertical offset is roughly the height of the window header (menu+toolbar) so there might be a connection.
The problem has annoyed me for several months now. I have tried various combinations of versions of the libraries that the programs use without any success.

[Vish (vish)]

this bug has been solved.!
did anyone happened to notice which update fixed this?

Probably some other bug was causing this effect on firefox and thunderbird?

[Norbert Nemec (nnemec)]

What system are you running? What kind of updates did you do recently?

[Vish (vish)]

@Norbert Nemec :
I'm running , Karmic , fully up-to-date... i had problems even on 2009-08-24 , but there has been no xulrunner or firefox updates since....
Which makes me believe that some other bug was causing this.

see related thunderbird bug > https://bugs.launchpad.net/bugs/403325

[Norbert Nemec (nnemec)]

Thanks! Seems like the following update solved the problem for me:

libgnutls26 2.6.6-1 -> libgnutls26_2.8.3-2_amd64.deb
libgail-common 2.17.7-0ubuntu3 ->libgail-common_2.17.10-0ubuntu1_amd64.deb
libgail18 2.17.7-0ubuntu3 -> libgail18_2.17.10-0ubuntu1_amd64.deb
libgtk2.0-0 2.17.7-0ubuntu3 -> libgtk2.0-0_2.17.10-0ubuntu1_amd64.deb

[Martin Emrich (emme)]

All people affected by this seem to have been users of Ubuntu karmic development releases. Since a few weeks before the release, this was fixed at least for me in Ubuntu 9.10. I wonder if it is still affecting anyone...

[Vish (vish)]

(In reply to comment #4)
> All people affected by this seem to have been users of Ubuntu karmic
> development releases. Since a few weeks before the release, this was fixed at
> least for me in Ubuntu 9.10. I wonder if it is still affecting anyone...

I'm the original reporter of this bug , The bug seems solved for me. But oddly *not* fixed by an update in firefox.
Seems that something else was affecting firefox and thunderbird simultaneously.

[Martin Emrich (emme)]

Yes, I assume it was an Ubuntu-related problem, so IHMO this bug could be set to RESOLVED/WORKSFORME (My bugzilla account seems not to allow this change).

[Tobbi-bugs (tobbi-bugs)]

Resolving as worksforme.

[Micah Gersten (micahg)]

Is anyone still experiencing this? Upstream just closed as works for me.

[Norbert Nemec (nnemec)]

Guess, the few library updates mentioned before really fixed the problem.

[Dave Gilbert (ubuntu-treblig)]

Looks good to me.