Seems Axe is looking for listbox to be an actual child of the combobox node?

[DavidMacDonald]

Axe threw an error for the following code and it seems OK. Could it be that the tool is looking for the role=listbox to be an actual child of the node that has a role=combobox? If so I'd say it should not require it to be a child of the node, as per the example in wai-aria 1.1 which is not a child.
https://www.w3.org/TR/wai-aria-1.1/#combobox

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</svg></span><span class="slds-assistive-text" data-aura-rendered-by="13:587;a">Search</span></span></span><div class="option-text slds-truncate" data-aura-rendered-by="17:587;a"><span class="all suggestion force suggestionText searchOption uiOutputText" data-aura-rendered-by="20:587;a" data-aura-class="uiOutputText">"wing" in Ascensia Diabetes Community</span><!--render facet: 96:587;a--></div></a></li></ul><div class="emptyListContent" data-aura-rendered-by="540:0"><div class="empty-result" data-aura-rendered-by="510:0"><span class="slds-icon_container slds-icon-utility-search empty-state-icon slds-button__icon forceIcon" data-aura-rendered-by="515:0" data-aura-class="forceIcon"><span data-aura-rendered-by="518:0"><svg class="slds-icon--xx-small slds-icon" focusable="false" data-key="search" aria-hidden="true">
<use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="/img/slds-icons/v7.6.0/utility-sprite/svg/symbols.svg#search"></use>
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[marcysutton]

Closing as this is a duplicate of #296