The imageClass of the TreeList command column has no effect

[eyupyusein]

Bug report

The imageClass setting of the TreeList command column doesn't work (neither in jQuery/MVC/Core)
Currently undefined class is added to the 'k-button' element.

Reproduction of the problem

1. Run the example in the API - https://docs.telerik.com/kendo-ui/api/javascript/ui/treelist/configuration/columns.command#columnscommandimageclass

Current behavior

There is no icon added in the command button and undefined class is added to the 'k-button' element.

Expected/desired behavior

There should be icon displayed in the button based on the added class in the imageClass configuration option

The issue is a regression - Starting with the 2023 R1 SP1 release

Note: Starting with the 2022 R1 release undefined class is added to the k-button element, but still the icon is displayed as icon classes are added to the inner span element.

Rendering with 2022 R1

Rendering starting with 2023 R1 SP1

Workaround

dataBound: function(){
$('.k-button-text').addClass('k-icon k-i-trash k-button-icon')
$('.k-button-text').text('')
},
Dojo - https://dojo.telerik.com/@NeliKondova/oPEvOcus

Environment

• Kendo UI version: 2023.1.425
• Browser: [all ]

[nelito987]

Reported in ticket ID: 1609147

[pepinho24]

With the 2023 R1 SP1 release, to show the icon, either a font one or an SVG one, you would need to simply declare the icon name via the .icon property instead of the .imageClass one. The image class will just add the class to the icon element if you need it for further customization of the icon.

[palhal]

I'm experiencing this issue as well when using the ASP.NET Core wrapper. I hope the wrappers get fixed in the next release.