Unable to reset the selection of HS when in a GET form (e.g. Views exposed filter form)

I'm experiencing a bug with the HS Taxonomy Views filters which I believe may be larger issue with the HS widget. When using a HS taxonomy such as the one below, I experience the following issue. After selecting a term and submitting the form, the view is correctly filtered. However, if I select the "___" (empty) or "<none>" options in the top level of the HS and submit the form again, the form is set back to what I had selected the first time.

Sample options in the HS widget:

___ (empty)
<none>
<all>
Fruits
--> Apple
--> Banana
--> Orange
Vegetables
--> Broccoli
--> Carrot
--> Spinach