- 
    Problem report 
- 
    Resolution: Fixed
- 
    Trivial 
- 
    4.0.9, 4.0.10
- 
        Sprint 56 (Sep 2019), Sprint 55 (Aug 2019), Sprint 54 (Jul 2019), Sprint 57 (Oct 2019)
- 
        0.25
Also checked with zabbix[host,,maintenance] internal key with Update interval 1s and have found that maintenance status was not switch at 0 seconds of every minute like version 3 on Zabbix4 series.
https://www.zabbix.com/documentation/4.0/manual/maintenance
Best Regards,
Syusei