session name set in PHPR 10.05 prefix an extra "p"

I realised an extra "p" was prefixed to the custom sesssion name of the generated project on 10.05.

Checking on project_folder\include\dbcommon.php, i saw

// isolate sessions for projects running on the same site
@session_name( "mysession" );

becomes:

@session_name( "pmysession" );

When i used the 10.05 beta, it was Okay, when i upgraded to 10.05 build 36354, this issue first appeared.
So i downgraded to 10.05 beta and still same issue, the exta p was always prefixed to the custom session name.

fyi. Maybe a bug? just to share in case you have the same issue.