Subpresentation with custom shader stops updating the texture

NOTE:
Used two subpresentation. Left subpresentation use standart shader, right subpresentation use custom shader.

STEPS:
1. Run test application
2. Press key 1
3. Press key 2

EXPECTED RESULT
After step 1 In both subpresentations the left line should be displayed permanently, and the right line should be animated.
After step 2 lines should be display is green color in both subpresentations
After step 3 lines should be display is grey color in both subpresentations

ACTUAL RESULT
After step 2 In left subpresentation changed color. Right subpresentation not changed color.
After step 3 In left subpresentation changed color. Right subpresentation not changed color.

Test application here: \\psaftp.harman.com\FTP\qt\ftp_data\From_Harman\QT3DS-4204