ScaffoldMessenger

SnackBar

Relevant issues:

Issue 57218

Issue 62921

Relevant PRs:

New API added in #64101

Deprecated in #67947

Removed in #98549

RectangularSliderTrackShape.disabledThumbGapWidth

Supported by Flutter Fix: yes

The RectangularSliderTrackShape.disabledThumbGapWidth was first deprecated in
v1.5, and then extended in v1.26.

This was no longer used by the framework, as the animation of the slider thumb
no longer occurs when disabled.

Migration guide

Code before migration:

RectangularSliderTrackShape

disabledThumbGapWidth:

2.0