Thinking about this some more I feel we should hold worklet animations to the same contract i.e., if input time has not changed we should not expect any changes in the output (in their case local time is the output).

There is however still a bug in worklet animation time plumbing which needs to get fixed.  At the moment cc::WorkletAnimation is always feeding wall time into its child keyframes during tick even if it is a scroll linked animation. We 
should correct this.

In another word, the value that worklet animation passes to  KeyframeEffect::Tick should match we return from WorkletAnimation::CurrentTime() but they currently do not. 

Marking as fixed. WorkletAnimation is now putting its keyframe at Pause state which means the monotonic time is ignored. 

Internally, WorkletAnimation has a last_current_time now which is used to optimize its ticking logic.