When compatibilty version is set to 3.0.0, the compiler does not generate warnings for styles that are not applicable to the current theme

Steps to reproduce:
1. Compile attache mxml with -compatability-version=3.0.0

Actual Results:
NO warnings

Expected Results:
Same warnings as with theme halo

C:/depot/flex/sdk/frameworks/libs/framework.swc$defaults.css(337): Warning: The style 'emphasizedSkin' was not declared by type 'mx.controls.Button' with theme(s) '[halo]'.
C:/depot/flex/sdk/frameworks/libs/framework.swc$defaults.css(559): Warning: The style 'busyCursorBackground' was not declared by type 'mx.managers.CursorManager' with theme(s) '[halo]'.
C:/depot/flex/sdk/frameworks/libs/framework.swc$defaults.css(1617): Warning: The style 'paddingTop' was not declared by type 'mx.controls.ToolTip' with theme(s) '[halo]'.
C:/depot/flex/sdk/frameworks/libs/framework.swc$defaults.css(1609): Warning: The style 'borderColor' is only supported by the theme(s) 'halo, spark'.
C:/depot/flex/sdk/frameworks/libs/framework.swc$defaults.css(1612): Warning: The style 'cornerRadius' is only supported by the theme(s) 'halo, spark'.
C:/depot/flex/sdk/frameworks/libs/framework.swc$defaults.css(1618): Warning: The style 'shadowColor' was not declared by type 'mx.controls.ToolTip' with theme(s) '[halo]'.
C:/depot/flex/sdk/frameworks/libs/framework.swc$defaults.css(1614): Warning: The style 'paddingBottom' was not declared by type 'mx.controls.ToolTip' with theme(s) '[halo]'.

Workaround (if any):
set theme to halo.

using -theme=${flexlib}/themes/Halo/halo.swc