3819777 - Why can’t I stay on the request entry form after saving an expected expense with an alert message?

The SAP Help Portal introduces the feature “Users Remain on the Request Entry Form After Saving an Expected Expense with an Alert.” 
However, users may encounter situations where this feature does not work as described.

The Feature “Users Remain on the Request Entry Form After Saving an Expected Expense with an Alert” Does Not Work as Expected , KBA , CON-CA , Cross Applications , CON-REQ-REQ , Request , Problem