209931 - With text zoom, SOME links in the page overlap preceding text

Status: RESOLVED DUPLICATE of bug 128405

(Core :: Layout, defect)

Description

[Marco Menardi]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030612
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030612

In page at http://community.borland.com/article/0,1410,30055,00.html, I'm at
1280x1024 resolution, I press Ctrl++ to magnify to 120% (you can also use the
View menu), and I've seen that *some* links in the page overlap the preceding text.

Reproducible: Always

Steps to Reproduce:
1.go to the page
2.set text zoom to 120% (or larger)
3.look at ALL the links

Comment 1

[Frederic Bezies]

No problem of overlapping for me. 1280x1024, zoom set to 120%.

Maybe a build with xft fonts don't have this problem ?

Comment 2

[Marco Menardi]

mmmm.. to help in reproducing the problem, here my fonts setup (I don't remember
if it's the default one or not)
Appearance -> Fonts
Forts for: Western
Proportional: Serif  - Size 16
Serif: Times New Roman
Sans Serif: Arial
Cursive: Comic Sans MS
Fantasy: OpenSymbol
Monospace: Courier New - Size 13
Minium font size: None
Allow documents to use other fonts: yes
Display resolution: 96 dpi

The menu item: View -> Caracter coding: Western (ISO 8859-1)

BTW, would be great having the possibility to export a Mozilla full setup and
re-import it into another PC, for tests/debug purpouses. Isn't something like
this already available?
Thanks

Comment 3

[Jesiah S]

I see this on LInux 2003061705 and on a CVS  XFT/GTK2 build

Comment 4

[Felix Miata]

Attachment: Testcase (portion of URL exhibiting the problem)

I saw this on both 1280x1024 (16px default) and 1024x768 (13px & 11px
defaults). I tried reducing further, but I don't seem to be able to remove any
more without making the problem disappear altogether. Reloading the page clears
the problem. Back then fwd clears the problem. Overlap does not occur after any
Ctrl--. The markup is a mess, e.g. - </b> and/or </font> right after (.

For this testcase, you'll probably have to hit Ctrl-- one or more times, then
Ctrl-+ one or more times before seeing the next to last link overlap "AM
training".

Comment 5

[Felix Miata]

Seen in W98 on same build as reporter. Didn't look for a dupe, so leaving
unconfirmed.

Comment 6

[Boris Zbarsky [:bzbarsky]]

Seeing this on linux too, with the testcase.

Comment 7

[Felix Miata]

I still see this in 1.4.1 for both OS/2 and Fedora 0.95 (1.4.1-7 rpm in the
beta3 distro; --enable-default-toolkit=gtk2, --enable-xft, --disable-freetype2).

Comment 8

[Saurabh Gupta]

Attachment: Yahoo webpage overlapping example

Snapshot of a testcase on the URL http://finance.yahoo.com/q/bc?s=^IXIC&t=1d&c=

Comment 9

[Saurabh Gupta]

Attachment: Mozilla.org overlapping example

testcase for overlapping text for the URL http://www.mozilla.org/

Comment 10

[Saurabh Gupta]

(S.Gupta & M.Rattan, 02/25/04) 
Conformation of bug with a different set of replication steps and URL.

Unable to replicate the bug for the URL provided, however easily replicable for
the following URLs and others as well
http://www.mozilla.org/
http://finance.yahoo.com/q/bc?s=^IXIC&t=1d&c=
On Windows XP Professional in "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US;
rv:1.6) Gecko/20040206 Firefox/0.8"


Steps for replication:

Step1. Open any of the following urls in a browser
       http://www.mozilla.org/
       http://finance.yahoo.com/q/bc?s=^IXIC&t=1d&c=

Step2. Using "CTRL+ '+'" keys or the same option from the "View" menu, increase 
       the text size to the maximum. Scroll the page to see the overlapped text 
       and hyperlinks.

Step3. Refer to the attached files for reference 
       (snapshots of the bug- Yahoo webpage overlapping example and Mozilla.org 
        overlapping example).


Follow up tests:

1.Replicating the bug on different operating system. As stated by Jesiah S 
  2003-06-19 07:38 PST, “I see this on Linux 2003061705 and on a CVS  XFT/GTK2 
  build”. Also by Felix Miata 2003-06-19 08:54 PST , on Windows 98 and Fedora.
2.Replicate it with different font type and sizes (replicated by us and the 
  inconsistency remains i.e. overlapping visible for some webpages whereas 
  absent for others). 
3.Replicate it with different screen resolutions and dpi settings, as stated by 
  Felix Miata 2003-06-19 08:50 PST and also replicated by us (1024 X 768, 1152 X 
  864, 1280 X 1024 and dpi settings of 96dpi and 120dpi).


Importance of the bug:
1.As compared to I.E. and Opera where this problem does not occur, Mozilla shows
  inconsistency in displaying text/urls in large font sizes. In certain 
  pages/urls the browser works just fine and in others the bug is clearly 
  evident. This indicates some form of inconsistency on the part of the browser 
  application in mishandling certain web pages.
2.For certain purposes such as that of presentations, teaching on large screens 
  etc the users might have to increase the font size and such misbehavior might 
  hinder readability which might instantly lead to the use of another browser.
3.There is no constraint mechanism on the size of the font’s display, which is 
  again an inconsistency issue. I.E. exercises constraint on the size of display
  and hence depicts more consistency and almost no chance of such a bug to 
  occur.

Comment 11

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

Our text zoom mechanism is far stronger than IE/Windows's font size prefs but
weaker (and worse) than Opera's full zoom.  Implementing full zoom, which we
should do, is bug 4821, but other than that this is just a bug in the site. 
Adding more URLs to the bug doesn't help.

Comment 12

[Felix Miata]

Is this bug 128405 ?

Comment 13

[rbs]

Yes, as far I can tell. Unless proved otherwise.

*** This bug has been marked as a duplicate of 128405 ***