162349 - Cursor/Caret lags text when typing

Status: VERIFIED WONTFIX

(Core :: DOM: Editor, defect)

Description

[Ken]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Macintosh; U; PPC; en-US; rv:1.1) Gecko/20020810
BuildID:    2002081011

When typing text, the cursor lags the text and positions itself in some
instances. A perfect example is on this bug reporting page. Although when typing
in the "Description" box it works normally, if you type in the URL box the
problem will appear. It appears on some sites and not on others, and appears to
be new on this version.
Also occurs when typing password in bug entry page.

Reproducible: Always
Steps to Reproduce:
1.Go to bug reporting page.
2.Type in the URL box.
3.

Actual Results:  Cursor lags text.

Expected Results:  Curson to place itself correctly.

Comment 1

[Matthias Versen [:Matti]]

-> Editor:Core

Comment 2

[Kathleen :Brade]

I noticed this since ... hmmm... it's been a while...

Comment 3

[kinmoz]

... since the fixes for bug 141900 was checked in.

By "lags" do you mean that the caret is flashing every once and a while at the
beginning of the textfield? Or are you referring to the fact that on some macs
the text doesn't appear till you stop typing?

Comment 4

[Kathleen :Brade]

the text doesn't appear until you stop typing (I think it also appears if you
slow your typing down enough)

Comment 5

[Ken]

By lags, I mean that the cursor, while progressing as you type, does not positin
itself properly. Normally, as you type a character the cursor will move so as to
stay to the right of the character. In this case, the cursor positions itself in
the middle of the last character typed or even further to the left.

Comment 6

[kinmoz]

I vaguely remember that there was a mac specific bug filed about this problem.
Does this sound familiar sfraser? I tried to query for it but didn't see anything.

Comment 7

[Syd Logan]

Is this Mac only? 

Comment 8

[Kevin McCluskey (gone)]

According to Kin this sounds like this is caused by a problem with the font
metrics on Mac. 

Kin can not reproduce on his Mac.  The reporter may have different fonts set up. 

Frank: Can someone on your team take a look?

Comment 9

[Frank Tang]

is this a regression ? can we test and see when does this start. can we
reproduce this on trunk ?
 can we reproduce this on m1.0 branch ?

Comment 10

[Kathleen :Brade]

also, is this specific to OS9 or can it be reproduced on OSX?
On OS9, I see a problem on the trunk (in the urlbar) but that may be due to what
urls I have in my history.  

I think there is a different problem in textarea/input fields.

Ken--what are your preference settings for Appearance > Fonts?

Comment 11

[Sergei Zak]

I have the same problem. My cursor goes too far from the text, I think it's due
to monospace movement when using proportional fonts. So the text lags, in my
case. Like this:

This is a sample text      I

So there's increasing space as I type, between the cursor and the text I type.
This is not everywhere, but some sites' forms.

Comment 12

[Syd Logan]

Segei, are you seeing this on MacOS always?

Comment 13

[Syd Logan]

Excuse me, I meant to ask, are you seeing on Mac OS 9 also.

Comment 14

[Frank Tang]

this could be relate to the QD text rounding error we see. Reassign to nhotta to
look into it. 

Comment 15

[Kathleen :Brade]

*** Bug 176137 has been marked as a duplicate of this bug. ***

Comment 16

[Kevin McCluskey (gone)]

Sujay: Can you find out if this is Mac OS9 specific, or does it also affect MacOSX?

Comment 17

[sujay]

works fine on OSX using 11/12 branch build.

Comment 18

[Joe Francis]

*** Bug 180665 has been marked as a duplicate of this bug. ***

Comment 19

[Kevin McCluskey (gone)]

Reassigning to Simon M.

Comment 20

[Kevin McCluskey (gone)]

EDITORBASE triage:

Resolving as WONTFIX because we believe this to be MacOS9 specific. If this can
be reproduced on MacOSX please re-open.

Comment 21

[rubydoo123]

per comment #20, verify