Hi Rob,
Thanks fro using Syncfsuion products.
I am afraid that I am not able to reproduce the issue you have mentioned here. Our samples running under websamples.syncfusion.com using “Windows server 2003”, but all the skins are applied properly in IE.
Please refer the sample from the below link, which illustrates this:
http://websamples.syncfusion.com/samples/Grid.Web/6.3.0.30/Grid_Web_ExcelExport/main.htmPlease have a look at the above and if still the issue exists, Could you please send us a sample to reproduce the issue with some screen shots? So that we could sort out the cause of the issue very soon, and provide you a better solution.
Regards,
Raji