CDateTime does not correctly display selected date when using dropdown after typing a single digit

[christianmichaelis]

Using a CDateTime configured for date selection like this:

CDateTime cDateTime = new CDateTime(content, CDT.BORDER | CDT.DROP_DOWN | CDT.DATE_MEDIUM);
cDateTime.addSelectionListener(new SelectionListener() {
   @Override
   public void widgetSelected(SelectionEvent e) {
      System.out.println(cDateTime.getSelection());
   }

   @Override
   public void widgetDefaultSelected(SelectionEvent e) {
   }
});

• Move focus into the widget, type a single digit "1" --> widget shows the first of month, selection listener gets the current date.
• Open dropdown, select another date by clicking on it (or any other way) --> drop down closes, selection listener gets the selected date, but widget still shows first of month.

[christianmichaelis]

Related issue found during fixing the first: Using a CDateTime in text-only mode (neither SIMPLE nor DROP_DOWN), hitting CTRL-Space with focus in the widget triggers an NPE as createPicker() is invoked via setOpen(true) from the BaseCombo.textListener.