This is not a bug everything is working as it should. What you are noticing is the 'C' in CSS or the 'cascade'.
The 'Background color: Hover' option is the
Quote:
Background color for menu items in hover and current state.
|
when you click on 'Tomsk Polytechnic University' it is now the 'current' menu item so that color applies and cascades to all it's children.
If you want to set it up so that if 'Tomsk Polytechnic University' is the current menu item, when you hover over it, the children are a different color, you will need to add some CSS to reset the children elements back to the color you want. You can put this CSS in the ATO->Add HTML/CSS Inserts->CSS Inserts option.