The Editor is not showing the current line and column position of the cursor. This use to be located in the lower left corner of the Editor window, but it is no longer noted there. It only shows execution time after executing a script or is left blank if there has not been any execution.
Check under View | Options | Display, that the "persist display of execution time" option is unchecked.
Persist display of execution time:
When checked, the leftmost area of the status bar displays the execution time of the last executed query. If this option is cleared, the execution time is shown until the caret position is changed in the editor. At that time the display changes from execution time to the LINE:COL position of the caret.
The default is unchecked