Kendo-angular: Dropdowns grouping issue

[baltyan]

The grouping first value is not shown or shows wrong value depending on position of dropdown in the page.

https://stackblitz.com/edit/angular-5ej18g?file=app/app.component.ts

Browser

• OS: Windows
• Browser: Chrome
• Version 77.0.3865.90

[vaheprog]

We have same problem.
Do you have any update? Because of this we can't go PROD.
Can you do hotfix or give us some workaround for this issue?

Thx

[jlocans]

Workaround that worked for me was to always put some dummy group at the front of your group data and hide it with css.
https://stackblitz.com/edit/angular-5ej18g-imeyvi

[vaheprog]

@jlocans - Thank you. That fixed the scrolling issue. But when you are in the group and scrolling inside that group it must fix that group name at the top. It does't work now like that

[mbechev]

Also, the issue is reproduced:

• when the popupSettings option appendTo property is set to '_component_'. The group header is not changed when scrolling the MutliSelect items.

Here is an example:
https://stackblitz.com/edit/angular-heyuhc?file=app/app.component.ts

• in Safari browser

[svetq]

A similar undesired behavior is observed only in IE 11 and MS Edge when running the examples from the following articles:
DropDownList:
https://www.telerik.com/kendo-angular-ui/components/dropdowns/dropdownlist/grouping/
MultiSelect:
https://www.telerik.com/kendo-angular-ui/components/dropdowns/multiselect/grouping/#

[tapopov]

Fix is available in the latest dev release (v4.2.8-dev.202005280652).

[gkarapeev]

Fixed in version v4.3.0