This is about the rendering of a JXTreeTable.
Whenever the same instance of an object is inserted more than once to the tree component of a JXTreeTable, an empty node is being painted for every subsequent insertion.
We are not expecting those empty nodes.
Could you please advise us how to remove those empty nodes?
To reproduce the problem:
1- Run the attached example (TestTreeTable.java)
2- Click on the button "Add node D to A"
3- Expand node "A" to be able to see the added node "D"
4- Click on the button "Add node D to A" again
5- You must be able to see the blank node under node "D"
6- Repeat step 4 to see the problem again