Skip to content

bug(MatSlider): MatSliderThumb stays active after drag ending #29767

Open
@slivniy

Description

@slivniy

Is this a regression?

  • Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

No response

Description

When you start dragging slider MatSliderThumb became active. Sometimes, it doesn't loose active state, when you ending dragging. It stays active even after click outside. Only way to 'release' it - drag it again.

Within this issue dragStart event is fired, but dragEnd not. Variable _isActive of MatSliderThumb stays true.
That leads to inconsistence of MatSliderThumb view (it looks as active all time) and makes setting it's value programmatically impossible (if you are trying to set Value from component).

Bug is not stable but can be easily reproduced at official doc examples.
Mostly occur, when dragging ends little lower than MatSliderThumb position.

MatSliderThumb_bug.mp4

Reproduction

StackBlitz link: https://stackblitz.com/edit/ikftbm?file=src%2Fexample%2Fslider-overview-example.html
Steps to reproduce:

  1. Drag slider a little
  2. Release on bottom side

Expected Behavior

dragEnd should be fired each time when user actually ending it.

Actual Behavior

Sometimes dragEnd event is not fired after actual dragging end.

Environment

  • Angular: 18
  • CDK/Material: 18
  • Browser(s): Chrome
  • Operating System (e.g. Windows, macOS, Ubuntu): MacOS

Metadata

Metadata

Assignees

No one assigned

    Labels

    P3An issue that is relevant to core functions, but does not impede progress. Important, but not urgentarea: material/slider

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions