When entering a new column ( [right-click table] > New Object > New Column) or changing an existing column, the data type cannot be backspaced if the auto-suggest kicks in. Nothing happens. It does not allow changing or undoing. I can highlight with the mouse and then press delete or backspace and it works.
pgAdminIII 1.22.1
Postgres 9.5.1
Windows 7 64-bit
Thanks.