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Change detection not happening in Stepper #17646

gopinathshiva opened this issue Nov 7, 2019 · 2 comments


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@gopinathshiva gopinathshiva commented Nov 7, 2019


I created a scrollsync using mat-vertical-stepper. The problem is its working sometimes and its not working sometimes. I believe this is due to change detection not kicks in. Though I am updating selectedIndex property, step is not getting active.

Detailed Reproduction Steps:

  1. Scroll on the right side of the app fastly
  2. You can see corresponding scrollsync not happening on the left

Also, sometimes when you click on the left side , selectionChange is not triggering

Interesting thing to note is when all the steps get done icon (by clicking on all steps on the left side to get done icon), then scrollsync working.

What is the expected behavior?

scrollsync should happen for the above attached code always.

What is the current behavior?

scrollsync not happening sometimes

What is the use-case or motivation for changing an existing behavior?

believing problem lies in the way , the component applying states active

Which versions of AngularJS, Material, OS, and browsers are affected?

All Latest versions


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@gopinathshiva gopinathshiva commented Nov 7, 2019

My mistake. Removing linear at the mat-vertical-stepper solved the problem


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@Splaktar Splaktar commented Nov 7, 2019

Please submit Angular Material and CDK questions here and issues here. This repo is for AngularJS Material.

I have transferred this issue to the correct repository for you.

@Splaktar Splaktar transferred this issue from angular/material Nov 7, 2019
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