Case Management subprocess should show Case File variables section in the Designer

When you have a Case Definition with a Subprocess the Designer does not show the Case File variable section on the Property Panel. Today you have no option to differentiate Case File variables from process variables other than the prefix caseFile_ in a subprocess.

Given you are working in a Case Project (with a marker file .caseproject) the Designer should show the Case File section on the Property Panel even for subprocess.