Show History showing 'Manager' for all changes

Forum,

We have come another instance where by an order which was added on SAP yesterday

A user (USER1) updated the Sales order by adding a space on the remark field and then updated.However the show history function is displaying the log as Manager who did this. USER1 did not log in as Manager. Has anyone ever come across this? The version this is happening on is 8.8 PL20.

Regards,

Juan