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Unplanned
Last Updated: 22 Apr 2026 10:49 by ADMIN
James
Created on: 16 Apr 2026 00:47
Category: Kendo UI for jQuery
Type: Bug Report
1
kendodropdownlist breaks when resizing browser from mobile width to desktop width and adaptiveMode = "auto"

When you have a simple kendodropdown list that is set to adaptiveMode = "auto", resizing the browser throws. This can be reproduced on your demo pages.

Steps to reproduce:

  1. use this Dojo: https://dojo.telerik.com/LHJLQgzy which was created from your demo page
  2. Ensure the browser is narrow enough to be considered mobile
  3. run the project
  4. confirm dropdown is functional
  5. resize the browser to desktop size
  6. the dropdown list stops working and throws

 

kendo.virtuallist.js:2890 Uncaught TypeError: Cannot read properties of undefined (reading 'style')

2 comments
ADMIN
Viktor Tachev
Posted on: 22 Apr 2026 10:49

Hi James,

Thank you for reporting the issue to us. 

Indeed the behavior is not expected and I have added it to our backlog so we can look into it.

As a token of gratitude for reporting the issue to us I have updated your Telerik points.

Regards,
Viktor Tachev
Progress Telerik

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James
Posted on: 16 Apr 2026 17:35
You have to go back three releases to Kendo UI 2025.4.1321 for it to work again.
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