AnimatedSprite - changing frame rate control values only takes effect on animation loop

• Run the attached qml
• Bring the FPS down to -1 with the right hand FPS controls
• With each decrease the animation slows slightly
• The Rate field will show Timer, the sprite will be animating quickly
• Push the FPS back up to about 10
• The indicated FPS will be 10, but the sprite will be animating at about 1fps, until the animation completes
• Press frameSync
• Again the effect only occurs on the next loop

Decreasing the value takes effect immediately, increasing does not.