Sophos Central Firewall: Cannot skip transaction

Hello Community,

I'm unable to deploy an user object to my Firewalls the result is a failed transaction. In the past my way to solve the problem is by click on "Skip (Ignore this failture"):

Actually when I do this I receive the error massage "This transaction has failed. Cannot be skipped."

The result is the message "This transaction is obsolete" and transaction stuck on "failed transactions". The problem is new transactions are not executed until the failed transaction is removed from the queue. 

Click on "retry" does not. After a while I'm on the begining and I can click "Skip",...

Regards,

Ben