DropDownList keyboard events bubble although already handled

[nelito987]

Bug report

DropDownList keydown event propagation is not stopped.
More information can be found in ticket - 1560718

Reproduction of the problem

1. go to the following Dojo - https://dojo.telerik.com/@sspasova/iVulISUL
2. trigger a KeyDown event

Current behavior

A KeyDown event is triggered (and handled) by the widget, its propagation is not stopped.

Expected behavior

The event should not bubble up

Environment

• Kendo UI version: 2024.1.130
• jQuery version: 3.4.1
• Browser: [all]

[narkiss-ibex]

I have the same problem while using the filter in DropDownList.
I've investigated DropDownList.js, and managed to stop propagation from the input field (filter field) on the handlekeydown function as follows:

    handleKeyDown: function handleKeyDown(event) {
      event.stopPropagation();
      var _a = this.$props,
      ...
    }

I might investigate further and perhaps come up with a PR for Kendo-UI, unless they will fix this issue (hopefully, because this is one annoying issue).

edit: I was manually editing the deployed code inside node_modules under @progress/kendo-vue-dropdowns/dist/es/DropDownList.js. Not sure how to get to the source code to suggest a fix :/