Table Editor: Default-Value Popup: OK-Button not triggered on Return, but the Save-Button

Editing the default-value of a column brings up a popup-window with radio-buttons
to set the default value (No Default, Custom Value, Null, etc.). In this pop-up the
"OK" Button appears to be the default-button.

When this popup-window has the focus and a value was chosen and someone wants to close
this popup-window using the Return-Key, the "Save"-Button of the parent-form gets triggered instead.

The popup-window remains open.
(That´s another reason for the preview-button feature-request)

See this thread.