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AnimationStyle curve and reverseCurve are not being used in showModalBottomSheet #174857

Closed
#181403
Closed
AnimationStyle curve and reverseCurve are not being used in showModalBottomSheet#174857
#181403
Labels
P2Important issues not at the top of the work lista: animationAnimation APIsfound in release: 3.35Found to occur in 3.35found in release: 3.36Found to occur in 3.36frameworkflutter/packages/flutter repository. See also f: labels.has reproducible stepsThe issue has been confirmed reproducible and is ready to work onp: material_uimaterial_ui package in flutter/packagesr: fixedIssue is closed as already fixed in a newer versionteam-designOwned by Design Languages teamtriaged-designTriaged by Design Languages team

Description

@LuDColl
LuDColl
opened on Sep 2, 2025

Steps to reproduce

  1. run showModalBottomSheet onTap

Expected results

Curves.elasticOut animation

Actual results

Curves.linear animation

Code sample

Code sample 
showModalBottomSheet(
  context: context,
  sheetAnimationStyle: AnimationStyle(
    curve: Curves.elasticOut,
    duration: Duration(seconds: 2),
    reverseCurve: Curves.elasticOut,
    reverseDuration: Duration(seconds: 2),
  ),
);

Screenshots or Video

No response

Logs

No response

Flutter Doctor output

Doctor output 
[√] Flutter (Channel stable, 3.35.2, on Microsoft Windows [versÆo 10.0.26100.4946], locale pt-BR) [844ms]
    • Flutter version 3.35.2 on channel stable at D:\flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 05db968908 (8 days ago), 2025-08-25 10:21:35 -0700
    • Engine revision a8bfdfc394
    • Dart version 3.9.0
    • DevTools version 2.48.0
    • Feature flags: enable-web, enable-linux-desktop, enable-macos-desktop, enable-windows-desktop, enable-android, enable-ios, cli-animations, enable-lldb-debugging

[√] Windows Version (Windows 11 or higher, 24H2, 2009) [2,6s]

[√] Android toolchain - develop for Android devices (Android SDK version 36.0.0) [5,1s]
    • Android SDK at C:\Users\lucas\AppData\Local\Android\sdk
    • Emulator version 35.6.11.0 (build_id 13610412) (CL:N/A)
    • Platform android-36, build-tools 36.0.0
    • Java binary at: C:\Program Files\Android\Android Studio\jbr\bin\java
      This is the JDK bundled with the latest Android Studio installation on this machine.
      To manually set the JDK path, use: `flutter config --jdk-dir="path/to/jdk"`.
    • Java version OpenJDK Runtime Environment (build 21.0.6+-13391695-b895.109)
    • All Android licenses accepted.

[√] Chrome - develop for the web [537ms]
    • Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe

[√] Visual Studio - develop Windows apps (Visual Studio Community 2022 17.14.12) [536ms]
    • Visual Studio at C:\Program Files\Microsoft Visual Studio\2022\Community
    • Visual Studio Community 2022 version 17.14.36408.4
    • Windows 10 SDK version 10.0.26100.0

[√] Android Studio (version 2025.1.1) [21ms]
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin can be installed from:
       https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
       https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 21.0.6+-13391695-b895.109)

[√] VS Code (version 1.103.2) [18ms]
    • VS Code at C:\Users\lucas\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.118.0

[√] Connected device (4 available) [631ms]
    • SM M346B (mobile) • 192.168.1.171:46641 • android-arm64  • Android 15 (API 35)
    • Windows (desktop) • windows             • windows-x64    • Microsoft Windows [versÆo 10.0.26100.4946]
    • Chrome (web)      • chrome              • web-javascript • Google Chrome 138.0.7204.184
    • Edge (web)        • edge                • web-javascript • Microsoft Edge 139.0.3405.125

[√] Network resources [1.125ms]
    • All expected network resources are available.

• No issues found!

Activity

  1. tirth-patel-nc
    added
    in triagePresently being triaged by the triage team
    on Sep 3, 2025

  2. tirth-patel-nc commented on Sep 3, 2025

    @tirth-patel-nc
    tirth-patel-nc
    on Sep 3, 2025
    Member

    @LuDColl thanks for the report.

      /// Used to override the modal bottom sheet animation duration and reverse
  /// animation duration.
  ///
  /// If [AnimationStyle.duration] is provided, it will be used to override
  /// the modal bottom sheet animation duration in the underlying
  /// [BottomSheet.createAnimationController].
  ///
  /// If [AnimationStyle.reverseDuration] is provided, it will be used to
  /// override the modal bottom sheet reverse animation duration in the
  /// underlying [BottomSheet.createAnimationController].
  ///
  /// To disable the modal bottom sheet animation, use [AnimationStyle.noAnimation].
  final AnimationStyle? sheetAnimationStyle;

    @ksokolovskyi taken a look at the source and only the duration parameters of AnimationStyle are used. As you can see docs mention that only the duration and reverse duration will be used. It is a bug.

    #38958, #145704, #145536 (cc @bleroux) might be related.

  3. tirth-patel-nc
    added
    has reproducible stepsThe issue has been confirmed reproducible and is ready to work on
    found in release: 3.35Found to occur in 3.35
    found in release: 3.36Found to occur in 3.36
    frameworkflutter/packages/flutter repository. See also f: labels.
    p: material_uimaterial_ui package in flutter/packages
    team-designOwned by Design Languages team
    a: animationAnimation APIs
    and removed
    in triagePresently being triaged by the triage team
    has reproducible stepsThe issue has been confirmed reproducible and is ready to work on
    on Sep 3, 2025
  4. dkwingsmt
    added
    P2Important issues not at the top of the work list
    triaged-designTriaged by Design Languages team
    on Sep 3, 2025
  5. github-merge-queue
    added a commit that references this issue on Feb 25, 2026

    Use AnimationStyle curve and reverseCurve in ModalBottomSheet animati…

    d6adb6d
  6. auto-submit
    closed this as completedin #181403on Feb 25, 2026
  7. tirth-patel-nc
    added
    r: fixedIssue is closed as already fixed in a newer version
    on Feb 25, 2026
  8. ahmedsameha1
    added a commit that references this issue on Feb 27, 2026

    Use AnimationStyle curve and reverseCurve in ModalBottomSheet animati…

    9f830b1

  9. github-actions commented on Mar 11, 2026

    @github-actions
    github-actionsbot
    on Mar 11, 2026 – with 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.

  10. github-actions
    locked as resolved and limited conversation to collaborators on Mar 11, 2026
  11. mboetger
    added a commit that references this issue on Mar 26, 2026

    Use AnimationStyle curve and reverseCurve in ModalBottomSheet animati…

    3c706f6
  12. chunhtai
    added a commit that references this issue on Jun 12, 2026

    Use AnimationStyle curve and reverseCurve in ModalBottomSheet animati…

    2d5853d
  13. Nakiha
    added a commit that references this issue on Sep 28, 2026

    Use AnimationStyle curve and reverseCurve in ModalBottomSheet animati…

    13f7056
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    P2Important issues not at the top of the work lista: animationAnimation APIsfound in release: 3.35Found to occur in 3.35found in release: 3.36Found to occur in 3.36frameworkflutter/packages/flutter repository. See also f: labels.has reproducible stepsThe issue has been confirmed reproducible and is ready to work onp: material_uimaterial_ui package in flutter/packagesr: fixedIssue is closed as already fixed in a newer versionteam-designOwned by Design Languages teamtriaged-designTriaged by Design Languages team

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