Bug? TreeTableViewExample visual bug

Sharing a screenshot of TreeTableViewExample running on Java v901. B4j v601 Resolution 1920x1080.

Anyone else who experience the same problem?

Works properly here.

Your screenshot looks similar to the bug reported here: https://stackoverflow.com/questions...tableview-leaves-icons-behind-when-collapsing

Does it work properly if there is no icon?

yes it seems to work well without an image, I put image = null to have it removed. This control seems good for a file explorer and a folder image would be nice.
Hopefully there will be a fix for next B4J update. If others can report the same problem it will be easier to track what's causing it. Thanks