Bug report

When a modal Dialog is open, if we open a modal Window and then attempt to close it, a js exception is thrown. This is a regression introduced in version 2024.1.319.

Reproduction of the problem

Run the following dojo example: https://dojo.telerik.com/IrEWEHAZ

1. Click the "Open Nested Window" button.
2. After the Window opens, try to close it by clicking its "x" button.

Current behavior

A js exception is thrown:
Uncaught TypeError: this._object(...)._overlay is not a function
The issue is related to the modal option being enabled in both the Dialog and the Window. Disabling this option in one of them, prevents the exception.

Expected/desired behavior

The Window closes without exceptions.

Environment

• Kendo UI version: 2024.1.319
• jQuery version: x.y
• Browser: [all]

I have discovered a bug in Kendo UI that seems to only affect IE11. 

When you create a Window with a position and width that renders partially off screen, IE11 will scroll the body to show as much of the window as possible.

Worse still, it seems to scroll to the last Kendo Window that was created.

This is undesirable. Is there a known workaround, or fix for this?

You can see it in this dojo if you shrink IE11 to be smaller than the window is wide:

https://dojo.telerik.com/iBiFatAT

See attached.

Thanks,

Julius

Bug report

Reproduction of the problem

Dojo example.

1. Click the button to apply new position to the Window

Current behavior

The Window is positioned in the top left corner of its container

If top and left position values are set in pixels instead of percent, positioning works as expected.

Expected/desired behavior

The Window is positioned according to the specified top and left values.

Environment

• Kendo UI version: 2020.3.915
• jQuery version: x.y
• Browser: [all]

Bug report

The kendoWindow does not appear on top of the kendoDialog, even when explicitly calling .toFront(). The z-index is not being updated correctly to bring the kendoWindow to the front.

Reproduction of the problem

1. Open the Dojo example - https://dojo.telerik.com/BrnfHeaO

Current behavior

The Dialog is displayed over the Window, although the Window toFront() method is used.

Expected/desired behavior

The kendoWindow (Dialog 2) should appear on top of the kendoDialog (Dialog 1) when opened, similar to the behavior in version 2024.1.130. When .toFront() is called on the kendoWindow, it should update the z-index appropriately and bring the window to the front, displaying it above all other dialogs/windows.

The issue is a regression starting with 2024.1.319

Workaround:

$("#dialog2").parents('.k-window')[0].style['z-index'] = 12000

Dojo - https://dojo.telerik.com/HmQpGqeB

Environment

• Kendo UI version: 2025.4.1111
• Browser: [all]