Duplicate entries in Resolution Pull-down

The selectbox for Resolution when resoving a bug is invalid. This is the html it generates:
<select name="resolution" id="resolution">
<option value="1"
selected >Fixed</option>
<option value="1"
selected >Fixed</option>
<option value="2"
>Won't Fix</option>
<option value="2"
>Won't Fix</option>

<option value="3"
>Duplicate</option>
<option value="3"
>Duplicate</option>
<option value="4"
>Incomplete</option>
<option value="5"
>Cannot Reproduce</option>
</select>

Here is a rundown of what I experience:
1) Start with Open bug
2) Click "Resolve bug"
3) put in comment if you want, mark it as Fixed
3a) Notice the duplicates of "Fixed", "Duplicate", etc in the resolution list
4) Click Resolve
5) Notice you're at the same page, but with an error message. Actually, an Error icon with no error message there. On the left side of the screen the bug shows up as resolved fixed.
6) The bug still shows up in my unresolved list.

The same error occurs if you attempt to go directly from an open bug to a closed and resolved/fixed bug.

If you set it to resolved/fixed, then close it in a separate step, it seems to give errors on the change to resolved/fixed, but no errors when closing.

This points to problems with the processing of that selectbox when there are duplicate entries in it.

How they got there, I haven't a clue.