MessageBox odd behavior on IE9

Hi all,

I'm creating a MessageBox in my UI5 controller as follows:

sap.ui.commons.MessageBox.show(message,  sap.ui.commons.MessageBox.Icon.SUCCESS, "Operation complete",  "CLOSE", null, "CLOSE");

But it is rendered differently in Chrome and IE9, though they are both supported

This is not the expected behavior I guess.

Does anybody experience the same?

Thanks, regards

Vincenzo