886432 - Text in Nightly search engine field renders differently depending on amount of text entered

Status: RESOLVED WORKSFORME

(Firefox :: General, defect)

Description

[Brian Carpenter [:geeknik]]

I have noticed that text in the search engine field in Nightly renders differently based on how much text you enter:

6 words, rendering looks normal:
http://i.imgur.com/UAT78RG.png

7 words, rendering does not look normal:
http://i.imgur.com/OKKovXz.png

Latest Win64 Nightly, GeForce GTX 570 w/ latest WHQL Drivers, Windows 8 Pro x64

Graphics info from about:support:


Adapter Description	NVIDIA GeForce GTX 570
Adapter Drivers	nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
Adapter RAM	1279
ClearType Parameters	DISPLAY1 [ Gamma: 2200 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 100 ] DISPLAY2 [ Gamma: 2200 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 100 ]
Device ID	0x1081
Direct2D Enabled	true
DirectWrite Enabled	true (6.2.9200.16433)
Driver Date	5-12-2013
Driver Version	9.18.13.2018
GPU #2 Active	false
GPU Accelerated Windows	1/1 Direct3D 10
Vendor ID	0x10de
WebGL Renderer	Google Inc. -- ANGLE (NVIDIA GeForce GTX 570 Direct3D9Ex vs_3_0 ps_3_0)
windowLayerManagerRemote	false
AzureCanvasBackend	direct2d
AzureContentBackend	direct2d
AzureFallbackCanvasBackend	cairo

Comment 1

[alex_mayorga]

If my eyes aren't failing me, I believe the font gets a bit "thinner" as soon as the letters have to scroll to fit in the search box.

FWIW I can reproduce this on Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130624 Firefox/24.0 ID:20130624031040 CSet: 76820c6dff7b

Graphics
Adapter Description	Intel(R) HD Graphics 3000
Adapter Drivers	igdumd64 igd10umd64 igd10umd64 igdumd32 igd10umd32 igd10umd32
Adapter RAM	Unknown
Device ID	0x0126
Direct2D Enabled	true
DirectWrite Enabled	true (6.1.7601.17789)
Driver Date	3-19-2012
Driver Version	8.15.10.2696
GPU #2 Active	false
GPU Accelerated Windows	2/2 Direct3D 10
Vendor ID	0x8086
WebGL Renderer	Google Inc. -- ANGLE (Intel(R) HD Graphics 3000 Direct3D9Ex vs_3_0 ps_3_0)
windowLayerManagerRemote	false
AzureCanvasBackend	direct2d
AzureContentBackend	direct2d
AzureFallbackCanvasBackend	cairo