We have the property BtnHiglight set in the skin.
In below example we have set the BtnHiglight to red to show it clearly:

What we could do is to set the BtnHiglight to the same color as the Menu background, and we wouldn't see the shadow. But then we get another problem...

We have used the sample application in "Xtreme ToolkitPro v16.4.0" SkinMDISample.exe.
As we can see below the BtnHiglight also affects shadow on "disabled toolbar item text" (in this example "Undo")

So if we set the BtnHiglight to the white color as the menu background we'll get a white shadow on the disabled toolbar item text, which we don't want.

(We have tried to remove the BtnHiglight proporty from the skin, but it looks like that the default color is white and a get a white shadow on the disabled toolbar item text.

We can also see that the BtnHiglight affects the frame color)

Any ideas how to solve this?

Kind regards Daniel from Sweden