650483 - Descenders cut off on one-line input fields

Status: RESOLVED FIXED

(Core :: Layout: Form Controls, defect)

Description

[Thomas]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0) Gecko/20100101 Firefox/4.0
Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0) Gecko/20100101 Firefox/4.0

The descenders, part of a letter/character below the baseline (e.g.: j, g, y), disappears when typng text in an input field of one line (height=1 line or rule)
I can't find the specific component that causes the problem.
In safemode the problem is not always (not on every OS/ version) resolved)
With firebug extension I can see that the div-height is not correct (too small), but if the site was poorly designed it shouldn't be resolved in safe mode. And I see the problem also on Facebook's status input field (which I don't think is poorly designed).

Reproducible: Always

Steps to Reproduce:
1. Find one line text input field (like status on facebook)
2. type letters with a descender (eg: j or g)
3. Look at result
Actual Results:  
the descenders are cut off

Expected Results:  
the descenders should be visible 

Happens on both my computers (Win 7, Fx 4.0 | Ubuntu 10.10, Fx 3.6.16)

On Win7 Fx 4.0:
In safe mode the results are correct (descenders are visible)
When manually disabling all extensions the results are wrong (descenders cut off)

On Ubuntu 10.10 Fx 3.6.16
Both safe mode and manually disabling all extensions show wrong results (descenders cut off)

Extensions installed on Win7 Fx 4.0:
  Adblock Plus 1.3.6
  Autofill Forms 0.9.8.0
  British English Dictionary 1.19.1
  Context Search 0.4.6
  Dictionnaire français"Classique et réforme 1990" 4.0.3
  Firebug 1.7.0
  Firefox 4 UI Fixer 1.4.3
  Gmail Manager 0.6.4.1
  Greasemonkey 0.9.2
    Flickr link original images 1.20
    Google reader filter
    Imdb pirated edition 20101021
  gTranslate 0.8
  Java console 6.0.23
  Java console 6.0.24
  Menu Editor 1.2.7
  Rapportive 1.2
  Tab Mix Plus 0.3.8.5
  Woordenboek Nederlands 3.0.1
  (not compatible, disabled) Firefox Synchronisation Extension 7.3.4.51

Extensions installed on Ubuntu 10.10 Fx 3.6.16:
  Adblock Plus 1.3.6
  Context Search 0.4.6
  Tab Mix Plus 0.3.8.5
  Ubuntu Firefox Modifications 0.9rc2
  Woordenboek Nederlands 3.0.1

Comment 1

[Thomas]

Attachment: screenshot of problem on Facebooks main page

Comment 2

[Boris Zbarsky [:bzbarsky]]

What styles are they applying to that field?  It sounds like they're just explicitly styling it to not be tall enough...

Comment 3

[Thomas]

I have no idea what style is applied to the field... (I'm no webdesigner/programmer) div innerWrap has height set to 16px but should be more like 18px?
I was wondering if it's just me encoutering this? I suppose not as I have it on 2 computers. 
It's not only on facebook but I'll try to add other websites where I encounter the issue.

Comment 4

[Boris Zbarsky [:bzbarsky]]

If you can post a public URI that shows the problem, that would be great, yes.

Comment 5

[Thomas]

Problem seems to have solved itself. I'm not encountering it any more.