Ribbon, tabs with awesome cannot show correctly in IE8

Suite and Optimus Suite 5
#1

The icon will show once the mouse move over it.

Does Ribbbon with awesome support IE8?

demo: snippet.dhtmlx.com/1ad96f5c2

#2

I use 5.1 standard version.

#3

The attached demo works well.
If the problem still occurs for you please, provide with a similar complete demo, where the problem can be reconstructed.
ribbon_awesome_ie8.zip (1.03 MB)

#4

The attached demo is not show correctly in my IE.

1 Open then new.html in IE8.
2 Then click the tab PLANNING, then you can see the text only. when you move mouse over the text, the icon will be show.

#5

Unfortunately the problem cannot be reconstructed locally in IE8. Please, check if your are using the IE8 in the default browser and document mode without any emulation.
Also, please, check your IE settings. Try to reset to default.