Custom status line message not updating in different records

When a status line is created it seems that the message is not updated in every record.

In my case I created a message, then a status line for the C_Order - C_OrderLine table and it shows the right message but when I navigate through the different records the status line is not always updated.

you can check in demo.globalqss in the Sales Order window this behavoir.

Here you can see how it works in a line.

Then I navigate to the next record with no lines and the mesage is still there.

The I navigate to another records with different values and it updates properly.

And in the last record where it has lines, the message does not update (you can check that the SUM of the lines is not correct)

The first value in the message is SUM (C_OrderLine.linenetamt)