animateTo isn't working

[myThorsten]

I'm using the following code to change to displayed tab on swipe-right or swipe-left via code. Please note the _tabController.animateTo:

        body: GestureDetector(
          onHorizontalDragEnd: (drawEndDetails) {
            print(drawEndDetails);
            if (drawEndDetails.primaryVelocity > 0.0 && _tabController.index > 0) {
              setState(() => _tabController.animateTo(_tabController.index - 1));
            } else if (drawEndDetails.primaryVelocity < 0.0 && _tabController.index < _labels.length - 1) {
              setState(() => _tabController.animateTo(_tabController.index + 1));
            }
          },
          child: MotionTabBarView(
            controller: _tabController,
            children: [
              ContactCreateHistory(encounter: widget._encounter),
              ContactCreateContacts(encounter: widget._encounter),
              ContactCreateMaps(encounter: widget._encounter),
              ContactCreateFormular(encounter: widget._encounter),
            ],
          ),
        ),

The displayed content is updated correctly, but not the tab-display. it is not animating nor updated.

Before swipe, on the first tab: After swipe, tab-content updated to second tab, should be focusing red circled tab:

Am I doing something wrong?

[myThorsten]

Not longer relevant

[neilgoyal]

What is the solution

[neilgoyal]

@myThorsten @therezacuet