Add event.stopPropagation() to extraNetworksShowMetadata()

    globalPopup.style.display = "flex";

}

function extraNetworksShowMetadata(text){

function extraNetworksShowMetadata(event, text){

    elem = document.createElement('pre')

    elem.classList.add('popup-metadata');

    elem.textContent = text;

    popup(elem);

    event.stopPropagation()

}

        metadata_button = ""

        metadata = item.get("metadata")

        if metadata:

            metadata_onclick = '"' + html.escape(f"""extraNetworksShowMetadata({json.dumps(metadata)}); event.stopPropagation(); return false;""") + '"'

            metadata_onclick = '"' + html.escape(f"""return extraNetworksShowMetadata(event, {json.dumps(metadata)})""") + '"'

            metadata_button = f"<div class='metadata-button' title='Show metadata' onclick={metadata_onclick}></div>"

        args = {