[Bug] "Display Envelopes on a Percentage Scale" in CBB

Hi everyone, I found a bug for "Display Envelopes on a Percentage Scale" option (Edit-Preferences-Customization-Display).
As you know it, It make the 0dB position to the middle of the clip.
I tried it in tree versions of cakewalk.
But it has no effect anymore in 'Cakewalk by Bandlab' & 'Sonar X3' but only Sonar 8.5.
The next picture is that I tried CBB and X3 which has no effect.
 

 
I want to know whether it is a bug in fact or not.
There is no malfunction in 8.5.