Log with GardenAdmin and goto organization window.
Select one and change her name. Save.
Tree nodes labes are not updated.
Same goes for the description and if you hover above an entry, the discription is not shown as tooltip. I already includes a fix for this in our lazy tree contribution for ADempiere and we will include it when we migrate the lazy tree feature to iDempiere.
Another thing to notice here on zk (don't know if also in swing) is that changing "Summary Level" on a record is not affecting the tree node - so you need to close and reopen the window to be able to move things into a summary node if you didn't defined on creation.
While Bug Triage I wondered if someone checked if this issue is also on Swing. It was labeled as "swing" but there is no code change in Swing code. I suspect the issue is still there. So I will label it as "SwingUI" for the Swing Maintenance Team and assign it away from Heng Sin. Someone from the SMT should review this one.