Effec Composer example: Displace effect doesn't look correct by default when project is run

Steps to reproduce:

• Open and run Effect Composer example
• Click Displace button
• -> Should show by default displace effect but no effect is seen without changing slider value (works correctly with slider)
• Stop qml runtime and run again
• Click Glow and Swirl
• Click Displace
• Effect is there for a moment, then gone. See attached recording.