mouse-based drag 'n' drop takes 5-10 pixels to start

[csells]

Steps to Reproduce

1. Download the flutter-go sample
2. Run
3. Drag a piece onto the board
4. Drag a piece around the board w/ the mouse

Expected results:
The drag should happen immediately on a click 'n' drag.

Actual results:
The drag doesn't start until the mouse is moved 5-10 pixels:

Logs

There are no exceptions shown in the Debug output.

There are no analysis errors.

➜ flutter doctor -v
[✓] Flutter (Channel dev, 1.21.0-9.0.pre, on Mac OS X 10.15.6 19G73, locale en)
    • Flutter version 1.21.0-9.0.pre at /Users/csells/flutter
    • Framework revision 7c6f9dd239 (4 days ago), 2020-08-09 10:31:03 -0400
    • Engine revision 6d86e67f04
    • Dart version 2.10.0 (build 2.10.0-4.0.dev 0341576448)

 
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.1)
    • Android SDK at /Users/csells/Library/Android/sdk
    • Platform android-30, build-tools 30.0.1
    • Java binary at: /Applications/Android
      Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build
      1.8.0_242-release-1644-b3-6222593)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 11.6)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 11.6, Build version 11E708
    • CocoaPods version 1.9.3

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 4.0)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 48.0.2
    • Dart plugin version 193.7361
    • Java version OpenJDK Runtime Environment (build
      1.8.0_242-release-1644-b3-6222593)

[✓] VS Code (version 1.48.0)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.13.2

[✓] Connected device (3 available)
    • macOS (desktop)  • macos      • darwin-x64     • Mac OS X 10.15.6 19G73
    • Web Server (web) • web-server • web-javascript • Flutter Tools
    • Chrome (web)     • chrome     • web-javascript • Google Chrome
      84.0.4147.125

• No issues found!

[csells]

cc @goderbauer

[jonahwilliams]

Looks like mouse gestures are using touch slop?

[stuartmorgan-g]

Duplicate of #36381?

[csells]

yep. #36381 is the same. closing this as a dup.

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.