616384 - Firefox button text is rendered in a different way then changes back after a while

Status: RESOLVED DUPLICATE of bug 613696

(Core :: Graphics, defect)

Description

[Krisztian Paczari]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b8pre) Gecko/20101202 Firefox/4.0b8pre
Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b8pre) Gecko/20101202 Firefox/4.0b8pre

The text of Minefield button looks nice, but sometimes the text is rendered in a crowded way then after some steps this changes back to the nice text. At this moment on mouse hover the size of the button changes back to fit the nice text.

Reproducible: Sometimes

Steps to Reproduce:
This bug happens sporadically when just browsing the web, but I've found one repro:

1. Maximize Minefield on Windows 7.

Then repeat these steps about 20 times!
1.1 Press Win+Down Arrow to Restore the non-maximized state
1.2 Press Win+Up Arrow to maximize it

2. Now the text is shown crowded

Then repeat these steps about 10 times!
2.1 Press Win+D to show Desktop
2.2 Press Win+D to show the maximized Minefield

3. Now the text is shown nice again, but the button is wider
4. Hover over the Minefield button, then its width changes
Actual Results:  
Changing Minefield button

Expected Results:  
Same Minefield button

Comment 1

[Krisztian Paczari]

Attachment: ClearType Off - Crowded text at Minefield start

Comment 2

[Krisztian Paczari]

Attachment: ClearType Off - Nice text after lots of Win+D

Comment 3

[Krisztian Paczari]

Attachment: ClearType Off - Button width changes after mouse hover

Comment 4

[blindskull13]

please change component to menu
also, this works fine for me, are you using any sort of theme?
Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:2.0b8pre) Gecko/20101203 Firefox/4.0b8pre ID:20101203044708

Comment 5

[Krisztian Paczari]

> also, this works fine for me, are you using any sort of theme?
No, it happens using the default Windows 7 Aero theme.

But turning on ClearType in Control Panel>Display makes the problem disappear! It always shows "Nice text".
But turning off ClearType, when opening Minefield it show the "Crowded text". Then pressing Win+d a lot makes it nice, then Win+up/down makes it crowded. There must be some kind of timing as well, because it does not really matter how often, but rather how long I am pressing the keys which makes the transition.

Comment 7

[Krisztian Paczari]

Attachment: ClearType On - Nice text at Minefield start

Comment 8

[Krisztian Paczari]

Attachment: ClearType On - Crowded text after lots of Win+D

Comment 9

[Krisztian Paczari]

Attachment: ClearType On - Button width changes after mouse hover

Comment 10

[Henrik Skupin [:whimboo][⌚️UTC+2]]

Krisztian, this bug has been duped against bug 594889, where all the work will happen to fix that. There is no need to upload more attachments.

Comment 11

[Krisztian Paczari]

I can reproduce it with ClearType On as well. I added and renamed the attachments.

This is related to bug 594889, but not the same. That bug is about the way text is rendered (ClearType On or Off -> nice or crowded).

This is the bug that describes that this text rendering can change, then on mouse hover the width of the Firefox button adjusts itself. I am changing this to Unconfirmed if you don't mind.

Comment 12

[Josh Tumath]

This also happens to me with hardware acceleration enabled.