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IE9 Compatibility Modes

There is a known issue in RadImageEditor with IE9 Compatibility modes. It applies in the following case:

  • IE9 with "Browser Mode" different than IE9 or Document Mode different than IE9

  • Windows 7 adjusted for best appearance

RadImageEditor uses the MS Filters for some of its operations performed on the client for the older Internet Explorer browsers (IE6, IE7 and IE8). These are the filters used:

If this filters are applied to an image (<img/> element) and the page is viewed in IE9 with "Browser Mode" different than IE9 or Document Mode different than IE9, under Windows 7 adjusted for best appearance, the actual image is not shown - the <img/> element is shown and has the exact dimensions of the image but the image is invisible. This issue can be reproduced with any image type.

radimageeditor-best-appearance

No known fix is available for the moment, and our recommendation is setting a <meta/> tag in the <head/> section of the document, that will explicitly tell the browser to use Browser Mode: IE9 and Document Mode: IE9. This is the <meta/> tag:

<meta http-equiv="X-UA-Compatible" content="IE=Edge" />

To reproduce the issue locally use the following HTML:

<img src="sample.png" alt="sample image" style="filter: flipH flipV progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=100) progid:DXImageTransform.Microsoft.Matrix(M11='1.0', sizingmethod='auto expand" />