Results for the issue: https://github.com/flutter/flutter/issues/59143

issue_59143.md

Steps to take

1. Request for clear steps to reproduce the issue.
2. Add the label waiting for customer response.

Possible comments for the issue

1. Please provide a step-by-step about how to reproduce this issue.

2. I was unable to reproduce the issue in the current stable channel (v1.17.3) with the following code:

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> with TickerProviderStateMixin {
  final itemsLength = 10;

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: SafeArea(
        child: DefaultTabController(
          length: itemsLength,
          child: Scaffold(
            appBar: TabBar(
              labelColor: Theme.of(context).accentColor,
              unselectedLabelColor: Theme.of(context).hintColor,
              indicatorSize: TabBarIndicatorSize.label,
              indicator: BoxDecoration(
                image: DecorationImage(
                  image: AssetImage('assets/618.png'),
                  fit: BoxFit.cover,
                ),
              ),
              isScrollable: true,
              tabs: List<Tab>.generate(itemsLength, (index) => Tab(text: "Item $index")).toList(),
            ),
          ),
        ),
      ),
    );
  }
}

Flutter Doctor:

C:\IdeaProjects\test>flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, v1.17.3, on Microsoft Windows [Version 10.0.18362.900], locale en-US)

[√] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
[√] Android Studio (version 3.6)
[!] Android Studio (version 4.0)
    X Flutter plugin not installed; this adds Flutter specific functionality.
    X Dart plugin not installed; this adds Dart specific functionality.
[!] Android Studio
    X Flutter plugin not installed; this adds Flutter specific functionality.
    X Dart plugin not installed; this adds Dart specific functionality.
    X android-studio-dir = C:\Program
    X Android Studio not found at C:\Program
[√] IntelliJ IDEA Community Edition (version 2019.3)
[√] VS Code (version 1.45.1)
[√] Connected device (1 available)

! Doctor found issues in 2 categories.

Make sure you add a image inside assets folder called 618.png.