Sample code flex_chassis and html_chassis works fine on sdk 6.0 but 6.0 U2

Hi all

I have tried both version of chassis app sample code with sdk 6.0, 6.0 U1 and 6.0 U2.

Which flex-chassis app project is: chassis-service and chassis-ui.

html-chassis app project is: chassisA-html and chassisA-service

Both flex version and html version works fine with sdk 6.0

But on 6.0 U1 and 6.0 U2, items in category Chassis App and Chassis App (A) just disappered, as shown in attachment.

Does anyone have this problem or this is the known issue in 6.0 U1 and 6.0 U2?