ISSUE_QUICK_ADD_CLICKED event is triggered multiple times

"jiraIssueContents": [
    {
        "icon": {
            "width": 0,
            "height": 0,
            "url": "/my_icon.svg"
        },
        "target": {
            "type": "web_panel",
            "url": "/hello-world"
        },
        "tooltip": {
            "value": "This is a tooltip. A hello world one"
        },
        "name": {
            "value": "Anne Issue Content Panel 0"
        },
        "key": "anne-issue-content-panel-0"
    }
],

AP.events.offAll('ISSUE_QUICK_ADD_CLICKED');
AP.events.on('ISSUE_QUICK_ADD_CLICKED', function(event) {
    // isNewToIssue is true if this is first time content panel being added to current issue.
    // isNewToIssue is false if content panel is already on issue view, and it is selected.
    console.log(`ISSUE_QUICK_ADD_CLICKED`, event);
});