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IE9 is not compatible with ExtJS 2.3
Good morning
I found a temporary solution
<html> <head> <meta http-equiv="X-UA-Compatible" content="IE=8" > <title>My webpage</title> </head> <body> <p>Content goes here.</p> </body> </html>
page and web.config iis server
<configuration>
<system.webServer>
<httpProtocol>
<customHeaders>
<clear />
<add name="X-UA-Compatible" value="IE=8" />
</ customHeaders>
</ httpProtocol>
</ system.webServer>
</ configuration>
this will force IE 9 to function as IE8
Sencha - Community Support Team
You are correct Ext 2.3 was released before IE9 and since it's no longer supported, you're going to have to manage any issues you find. Ext 3.4 was released to support IE9, so you could look at the differences between 3.3 and 3.4 to see what you might be able to apply to your 2.3 build.
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IE9 is not compatible with ExtJS 2.3
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