Font weight issues in IE9

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Visit the web font directory with IE9 and view the font weights of "Open 
Sans" or "Yanone Kaffeesatz", e.g. 
http://www.google.com/webfonts/specimen/Open+Sans

What is the expected output? What do you see instead?
The font weights of "Book 300" and "Normal 400" should be different but they 
are displayed the same.

What version of the product are you using? On what operating system?
Windows 7, IE9

Please provide any additional information below.
I have attached some screenshots which should illustrate the problem. The first 
one shows the wrong weights in IE9, the second one shows the correct weights in 
FF7 and the third one shows the problem with another font.

Original issue reported on code.google.com by graphw...@googlemail.com on 2 Oct 2011 at 12:25

Attachments:

• ie.jpg
• ff.jpg
• ie2.jpg

[GoogleCodeExporter]

I am currently experiencing this problem with Istok Web on a site I am 
currently working on.

I have checked the site in IE7 and IE8 as well as all other modern browsers, 
all looks well, leading me to believe that it is an IE9 specific issue.

The font actually loads bold, but the snaps back to the regular appearance.

A temporary fix is to force the page to load as IE7 which is far from ideal. 
Please fix this as a matter of urgency!

Original comment by major...@hotmail.co.uk on 14 Nov 2011 at 12:03

[GoogleCodeExporter]

I've run into the font-weight issue using the Open Sans Google web font.
This is only a problem in IE9 for me.

The problem is that upon page load/refresh, a seemingly randomly weighted Open 
Sans font appears.

Here's what I've narrowed it down to:

1. Un-Grouping the fonts I am using. 
<link 
href='http://fonts.googleapis.com/css?family=Open+Sans:600,700,300,300italic' 
rel='stylesheet' type='text/css'/>

When I break out the fonts into four separate <links>  the problem goes away.

2. X-UA Compatibility:
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE8" />
I was using this as a band-aid to fix some layout issues I was running into in 
IE9.
Unfortunately it looks like this is the real issue affecting the loading of 
Google Fonts on our pages.  

2.  

Original comment by JustinTW...@gmail.com on 1 Mar 2012 at 4:33

[GoogleCodeExporter]

It works for me, I have never been able to reproduce this. I suggest 
uninstalling the fonts :)

Original comment by dcrossland@google.com on 11 Apr 2012 at 6:43

Attachments:

• opensans-msie9.png

[GoogleCodeExporter]

Original comment by dcrossland@google.com on 11 Apr 2012 at 6:44

• Changed state: Accepted