Google map marker title not showing on hover

I’m using the @capacitor/google-maps API. Setting the “title” property on a marker is supposed to show the title when you hover, but I can’t get it to with my code. Is there anything beyond this that should be done to trigger? All the listeners seem to be for other events like Click. (I added a Click listener and it worked). How to get the Title to show without clicking? Code fragment is below. The map display works nicely and all the markers show.

    let markers = [];
    for (let v of this.visits) {
          title: v.clientName,
          coordinate: {
            lat: v.clientLatitude,
            lng: v.clientLongitude
    await Promise.all(markers);