2>> This is the issue with IE 7 not mozilla just select all(ctrl+a) and press "U" it underline the text but if you press again it is not removing underline.
We are using use <span style="text-decoration: underline">Hello </span> for the Unline. If you don't like this behaviour, you can write a simple javascript to overwritr this behaviour.
Other than those below are couple of more:
3. In the "Font" dropdown itself in IE 7 the "Wingdings" font name display as some special characters while in mozilla it is fine.
Open CuteSoft_Client\CuteEditor\Configuration\Shared\Common.config
and change <item text="Wingdings" html="<font size=3 face='Wingdings'>Wingdings</font>">Wingdings</item>
to
<item text="Wingdings" html="<font size=3 >Wingdings</font>">Wingdings</item>
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