Magento 2 automatically disables maintenance mode after certain actions

[royvanos]

Preconditions

1. Any Magento 2 version

Steps to reproduce

1. Enable maintenance mode
   2.a Run scheduled backup with maintenance mode enabled
   2.b Switch from developer mode to production mode

Expected result

1. Maintenance mode enabled

Actual result

1. Maintenance mode disabled

After doing a scheduled backup with maintenance mode enabled the store takes itself out of maintenance mode when done. Same for switching to production mode.

In my opinion Magento 2 should check if maintenance mode was enabled in the first place and should not disable maintenance mode if so.

[hostep]

Just informational, but the first case was already reported before: #7951

[magento-engcom-team]

@royvanos, thank you for your report.
We've created internal ticket(s) MAGETWO-75973 to track progress on the issue.