menu items, pointing to the same view, with different arguments are considered as the same item

I am using menu block to show multiple links to the same view with different arguments like that:

Foxes:           foxes
Red Foxes:       foxes?color=red
Green Foxes:     foxes?color=green
Big Green Foxes: foxes?color=green&size=xxl
Tiny Red Foxes:  foxes?color=red&size=xs

unfortunatly the menu is redered like this:

<ul class="menu">
	<li class="active">
		<a href="foxes">Foxes</a>
	</li>
	<li class="active">
		<a href="foxes?color=red">Red Foxes</a>
	</li>
	<li class="active">
		<a href="foxes?color=green">Green Foxes</a>
	</li>
	<li class="active active-trail">
		<a href="foxes?color=green&size=xxl">Big Green Foxes</a>
	</li>
	<li class="active">
		<a href="foxes?color=red&size=xs">Tiny Red Foxes</a>
	</li>
</ul>

note that every li has the class active and one has the class active-trail(I don't understand why).

the normal menu doesn't behave like this