FULL PRODUCT VERSION :
java version "9"
Java(TM) SE Runtime Environment (build 9+180)
Java HotSpot(TM) 64-Bit Server VM (build 9+180, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [version 10.0.15063]

A DESCRIPTION OF THE PROBLEM :
In package javafx.scene.control in the class TableCell
we found (here /..../ replace not pertinent code for the problem) :

    @Override public void commitEdit(T newValue) {
   /...../
        super.commitEdit(newValue);
   /...../

        if (table != null) {
            // reset the editing cell on the TableView
            table.edit(-1, null);
   /...../
        }
    }

In this method, the line super.commitEdit(newValue) calls in class javafx.scene.control.Cell the following method :

   public void commitEdit(T newValue) {
        if (isEditing()) {
            setEditing(false);
        }
    }

Doing so, isEditing is set to false,
It follows that later, when commitEdit executes table.edit(-1, null) nothing happens as
the in class javafx.scene.control.TableView the following edit method

    public void edit(int row, TableColumn<S,?> column) {
        if (!isEditable() || (column != null && ! column.isEditable())) {
            return;
        }

        if (row < 0 && column == null) {
            setEditingCell(null);
        } else {
            setEditingCell(new TablePosition<>(this, row, column));
        }
    }

does !isEditable which is always true, preventing the later call to setEditingCell(null)



REGRESSION. Last worked in version 8u131

ADDITIONAL REGRESSION INFORMATION:
n/a sorry

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
build a table (1 column, 1 field) with setOnKeyPressed such as

      textField.setOnKeyPressed((KeyEvent t) -> {
        if (t.getCode() == KeyCode.ENTER) {
          commitEdit(textField.getText());
        }
      });

edit that field and hit ENTER


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
edit(-1, null) should do setEditingCell(null)

changing the cell editing state to not-editing
ACTUAL -
edit(-1, null) is not called

the cell stay in editing mode active...

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
    public void commitEdit(String newValue) {
      super.commitEdit(newValue);

     /* my code here */
    }
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
    public void commitEdit(String newValue) {
      super.commitEdit(newValue);

      // the 3 lines are a patch
      getTableView().setEditable(true);
      getTableView().edit(-1, null);
      getTableView().setEditable(false);

      /* my code here */
    }