Task manager constantly busy with close_problem task if trigger no longer exists but event still exist.

 select a.userid,a.eventid,e.objectid from task_close_problem tcp left join acknowledges a on tcp.acknowledgeid=a.acknowledgeid left join events e on a.eventid=e.eventid where tcp.taskid=253336;
userid | eventid | objectid
-----------------------
3 | 1423346 | 20026
-----------------------

zabbix=# SELECT * from events where eventid=1423346;
 eventid | source | object | objectid |   clock    | value | acknowledged |    ns     |                               name                                | severity
---------+--------+--------+----------+------------+-------+--------------+-----------+-------------------------------------------------------------------+----------
 1423346 |      0 |      0 |    20026 | 1609410411 |     1 |            0 | 860568967 | Line "ORA-16038: log 1 sequence# 708 cannot be archived" detected |        4

select * from triggers where triggerid=20026;
 triggerid | expression | description | url | status | value | priority | lastchange | comments | error | templateid | type | state | flags | recovery_mode | recovery_expression | corre
lation_mode | correlation_tag | manual_close
-----------+------------+-------------+-----+--------+-------+----------+------------+----------+-------+------------+------+-------+-------+---------------+---------------------+------
------------+-----------------+--------------
(0 rows)

  7912:20210405:124237.751 query [txnlev:0] [select a.userid,a.eventid,e.objectid from task_close_problem tcp left join acknowledges a on tcp.acknowledgeid=a.acknowledgeid left join events e on a.eventid=e.eventid where tcp.taskid=160427]
  7912:20210405:124237.752 End of tm_try_task_close_problem():FAIL
  7912:20210405:124237.752 In tm_try_task_close_problem() taskid:160428
  7912:20210405:124237.752 query [txnlev:0] [select a.userid,a.eventid,e.objectid from task_close_problem tcp left join acknowledges a on tcp.acknowledgeid=a.acknowledgeid left join events e on a.eventid=e.eventid where tcp.taskid=160428]
  7912:20210405:124237.752 End of tm_try_task_close_problem():FAIL