This should be a pretty straightforward one but I can't seem to figure out why this isn't working.  I'm trying to create a select box with the different categoryGroups of knowledge.  It seems to work fine when I use basic html <select> and <option>  but when using <apex:selectList> and <apex:selectOption> it does not.

This works:

<select name="category">
    <option Value="myRoot">--All--</option>
    <knowledge:categoryList categoryVar="category" categoryGroup="IssueType" rootCategory="myRoot" level="-1">
        <option value="{!category.name}">{!category.label}</option>
    </knowledge:categoryList>
</select>

But this does not (only the  --All-- selection is displayed, nothing inside the categoryList loop)

<apex:selectList id="issueTypeList" size="1" value="{!issueType}">
    <apex:selectOption itemLabel="--All--" itemValue="myRoot" />
    <knowledge:categoryList categoryVar="category" categoryGroup="IssueType" rootCategory="myRoot" level="-1">
          <apex:selectOption itemLabel="{!category.name}" itemValue="{!category.label}" />
    </knowledge:categoryList>
</apex:selectList>

Is there something about knowledge:categoryList and apex:selectOption that do not play well together?  I'm sure I could work around it using the basic html controls but was hoping to understand why this isn't working.

Thanks,

George