Failing cache:flush did not remove maintenance flag

[norgeindian]

During our recent update from Magento 2.3.4-p2 to Magento 2.3.5-p2 we had the issue, that the cache:flush process failed during the cleanup task.
This issue was, that the Class Magento\GoogleShoppingAds\Model\Cache\Type did not exist anymore, as it was removed during this update.
I assume that the cache:flush command tried to flush this cache as well, even if it was not there anymore.
However, as the deployment failed, the symlink of the shop system was correctly set back to the version before.
Unfortunately the maintenance mode has not been disabled, which led to a downtime until we found out, what is wrong.
Would it be possible to add this as a general backup plan?

[osrecio]

Hi I think is a specific problem.

Have you been able to reproduce it again?

Thanks!