To reproduce:
1) Unzip the attached NB project (TableViewTestV3.zip)
2) Open with NB and setup FX jar in project properties
3) Run (see TableViewTest3.png)
    -> the three columns have their getTableView() prop correctly setup (see standard output)
4) Click 'Remove Sub from Right' button
    -> 'Left' and 'Sub' columns still have their tableView prop ok
    -> 'Right' column has its tableView prop set to null : BUG (or transient effect ?)
5) Click 'Dump'
    -> 'Right' column still has its tableView prop set to null : BUG