Table column doesn't accept String through Input Method(IM) without press ENTER.
Opeerate the following:
 - Run the Table/TableExample4 demo
 - Click any column
 - Input some characters

 Then, those characters are appended after selected item string.

 - Select another column, enable IM and inout some characters through IM

 Then, those characters are not appended. When IM is off, characters are
 appended. Next IM is on again, characters are not appended again on
 that column.

 When double click / press ENTER on a column, all characters through
 IM can be added.