_DropDownTextFieldState#943eb(tickers: tracking 1 ticker) was disposed with an active Ticker.
_DropDownTextFieldState 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.
_DropDownTextFieldState#943eb(tickers: tracking 1 ticker) was disposed with an active Ticker.
_DropDownTextFieldState 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.