Wrong display with custom shader in Studio 2.8

1. Compile test application with Studio 2.7
Run test application

2. Compile test application with Studio 2.8
Run test application

Compare 2 results. Observe difference on 2.7 and 2.8.
As example see screenshot 2.7.png and 2.8.png

Test application and screenshots are here: \\psaftp.harman.com\FTP\qt\ftp_data\From_Harman\QT3DS-4201