Spinner contradicting the result status

[stoch]

The following situation is inconsistent:
spinner is indicating a running execute/fetch while the result pane is iondicating a sucessful fetch with 0 rows:

observed in long running production query on SBS0:

SELECT
    W_ERRORTIME, W_APPLIC, W_PROCEDURE, W_TOPIC, W_SHORTID, W_BIHID, W_BOHID,
    W_MESSAGE, W_BDID
FROM
    SBS0_ADMIN.WARNING
WHERE
    W_APPLIC = 'PKG_AAA'
    AND W_TOPIC <> 'MISSING IMSI/IMPI'
    AND W_ERRORTIME > sysdate - 10
ORDER BY
    1 DESC