Using .map() actually converts a list into an iterator, and an iterator in dart is lazy-loaded. Either converting it into a list or using forEach/for-loop makes it work.

I tried your library and after it got disappeared I got the following warning

════════ Exception caught by widgets library ═══════════════════════════════════
The following assertion was thrown while finalizing the widget tree:
_ClockSimplePathState#3d015(tickers: tracking 12 tickers) was disposed with an active Ticker.

_ClockSimplePathState created a Ticker via its TickerProviderStateMixin, but at the time dispose() was called on the mixin, that Ticker was still active. All Tickers must be disposed before calling super.dispose().

Tickers used by AnimationControllers should be disposed by calling dispose() on the AnimationController itself. Otherwise, the ticker will leak.

The offending ticker was: _WidgetTicker(created by _ClockSimplePathState#3d015)
The stack trace when the _WidgetTicker was actually created was:
package:flutter/…/widgets/ticker_provider.dart:202
#4      new AnimationController
package:flutter/…/animation/animation_controller.dart:246
#5      _ClockSimplePathState.fillAnimationController
package:clock_loader/src/**clock_loader_particles.dart:73**
#6      _ClockSimplePathState.initState.<anonymous closure>

• Go with reset config implementation.

• Added flutter mounted logic in the case of animation controller initialisation and reverse-forward logic.
• Fix the reuse issue.