Unplanned
Last Updated: 24 Aug 2026 13:43 by ADMIN
The Telerik Reporting installer adds a copy of the legacy ASP.NET WebForms Report Viewer assembly(Telerik.ReportViewer.WebForms.dll) to the Global Assembly Cache (GAC).
Unplanned
Last Updated: 20 Aug 2026 07:52 by Simon
Created by: Simon
Comments: 0
Category: Reporting
Type: Feature Request
1

The Telerik.Reporting documentation mentions that the Telerik.Reporting.* libraries should be available on nuget.org with the most recent release. However, when I search for Telerik.Reporting in the NuGet Gallery, I am not able to find any Telerik.Reporting.* package. The other products we use (UI for WPF, Document Processing) seem to be available though.

-----------------------------------------

Staff note: On the Reporting side, our initial goal was indeed to make Telerik Reporting available through nuget.org, alongside the rest of the Telerik product portfolio. However, we are currently investigating an issue that is preventing us from publishing the Telerik.Reporting packages to nuget.org, which has delayed their availability.

Please use this feedback item to subscribe to updates and receive a notification as soon as the Telerik.Reporting packages become available on nuget.org.

Pending Review
Last Updated: 19 Aug 2026 09:08 by Pascal
Created by: Pascal
Comments: 0
Category: Reporting
Type: Feature Request
1
The fonts defined in the fontLibrary element are discovered once, lazily on first use, and are cached for the process lifetime. Fonts added to the configured directories afterward are not picked up automatically —  a restart of the application is needed.
As we install fonts regularly and don't want to restart/redeploy everytime we install a new font we propose a new api to clear the cache.
A new method Telerik.Reporting.Fonts.RefreshCache would solve this problem and improve the experience of using the Telerik Reporting library.
Unplanned
Last Updated: 18 Aug 2026 12:16 by Abhilash Reddy

I have created a report group, and in that group's header, I have added a textbox with a sorting action.

The action can be triggered, but the data does not get sorted, regardless of whether the sorting target is the report itself or the group from which the group section is created. 

Unplanned
Last Updated: 18 Aug 2026 12:45 by ADMIN
Currently, the Download Raw Data action is available only for the WinForms Report Viewer. I would like to see it implemented for the web-based Report Viewers as well, so that our end-users can easily download the data used in the report.
Unplanned
Last Updated: 17 Aug 2026 08:43 by ADMIN
Scheduled for 2026 Q4 (Nov)
Created by: Russ
Comments: 0
Category: Reporting
Type: Feature Request
1
Currently, when using a BackgroundImage on report items such as Panels, there is no way to control how the image is positioned/scaled within the container. The current workaround is to use a PictureBox for this and place it behind the content, but it is not ideal, especially considering the overlapping content.
Unplanned
Last Updated: 05 Aug 2026 15:34 by office
When content associated with a TOC entry is hidden, subsequent TOC page numbers may be offset by one page. In the attached sample, the issue occurs when a Group Footer containing the TOC entry is hidden and the TOC is close to spilling onto a second page.
Unplanned
Last Updated: 05 Aug 2026 08:22 by Markus
Created by: Markus
Comments: 0
Category: Reporting
Type: Bug Report
1

When the reports are displayed within the WPF Report Viewer, they are rendered in the XAML format, and it does not natively support SVGs.

Currently, the SVGs are always rasterized before being written to the XAML, which results in the images being blurred when zooming in the report viewer.

Completed
Last Updated: 18 Aug 2026 08:28 by ADMIN
Release 2026 Q3
When exporting a report with large data (100,000 and 200,000 records) to XLSX, the rendering takes much more time (1+ min and 4+ min) than when previewing in the desktop designers or generating a PDF (12s and 46s). The final XLSX and PDF documents are of comparable sizes.
Unplanned
Last Updated: 05 Aug 2026 06:39 by Pramod

When I enable accessibility in my reports, the final PDF document becomes 20+ times bigger than without accessibility. The reports contain large amounts of data and result in 2000+ pages.

I need the images in my reports (usually only one logo) to have alternative text, so the screen readers can describe them. To achieve this, currently I have to enable accessibility for the entire report, hence the huge final documents.

It would be very useful for my scenario to add alternative text to the PictureBox without declaring the entire report as accessible.

In Development
Last Updated: 13 Aug 2026 10:41 by ADMIN
Created by: Nitin
Comments: 0
Category: Reporting
Type: Bug Report
1

I am using the HTML5 report viewer and seeing 4 errors in the WAVE tool, along with multiple alerts. See: https://wave.webaim.org/report#/https://demos.telerik.com/reporting/product-sales

Please consider addressing them.

Unplanned
Last Updated: 27 Jul 2026 06:33 by Gianluca Mariani

Currently, the Download Raw Data action is available in the Windows Form Report Viewer. It is hard-coded there, and the download button appears when you hover over the data item.

The developer can cancel the action through the interactive action event handlers. However, the button persists even when the action is cancelled and doesn't do anything, which is misleading and confusing for the report readers.

Please let the developers disable the action/button, for example, through configuration in the viewer.

Unplanned
Last Updated: 23 Jul 2026 08:33 by Pragati

We get an incorrect “Email format is not valid” validation when sending a report to multiple recipients. We are using the wrapper/HTML5 Angular Report Viewer

Steps to Reproduce

  1. Open any report in the Telerik Report Viewer.
  2. Click Send Email.
  3. In the To field, enter multiple valid email addresses, for example:

    user1@example.com,user2@example.com

    or

    user1@example.com;user2@example.com
  4. Click Send.

Actual Result

  • The validation message "Email format is not valid." is displayed beneath the To field.
  • Despite the validation error, the email is sent successfully to all recipients.

Expected Result

  • Multiple valid email addresses should be accepted without displaying a validation error.
  • Since the email is successfully delivered, no validation message should be shown.
Completed
Last Updated: 18 Aug 2026 08:18 by ADMIN
Release 2026 Q3
I am currently using the HTML5 report viewer on a page with Telerik UI for ASP.NET Core components. However, there is a conflict, because the components rely on font icons with one glyph codes, while the report viewer brings in its own CSS with glyph codes from an older version of Kendo UI themes. Please consider providing a built-in solution so that we do not have to depend on fragile, unsupported workarounds.
Completed
Last Updated: 04 Aug 2026 15:11 by ADMIN
Release 2026 Q3
After upgrading to version 20.0.26.424+, I started experiencing an issue where having two similar images in the report results in one of them being duplicated and reused when exporting to PDF. I did not experience this issue in older versions.
In Development
Last Updated: 03 Aug 2026 08:09 by ADMIN

I am using the Standalone Report Designer for .NET to open a code-based report from an application that was migrated from .NET Framework. Before the migration, function calls defined in the designer.cs file were preserved and evaluated at runtime as expected. However, after migrating to the code-based reports functionality supported by the Standalone Report Designer for .NET, these function calls are evaluated immediately during the report import process, and the resulting values are then serialized and stored in the report definition.

It would be nice if the function calls were preserved in the imported report, allowing them to be evaluated later at runtime, as their return values may change depending on the execution context.

Unplanned
Last Updated: 08 Jul 2026 08:53 by Marco
Add support for print preview in the print dialog (Windows 11) of the desktop viewers. I am using the WPF viewer specifically. This preview appears for other print jobs—only when printing the Telerik report it does not.
Unplanned
Last Updated: 07 Jul 2026 14:12 by Prashanth
Created by: Prashanth
Comments: 0
Category: Reporting
Type: Feature Request
1

Currently, graph axes do not provide a way to render separator lines between category groups. While this is generally not an issue for simple scenarios, it can make charts with nested categories difficult to read.

For example, when a graph displays multiple subcategories under a parent category (such as revenue ranges grouped by quarter), there is no built-in visual indicator showing where one parent category ends and the next begins.

It would be useful to provide support for category separators on graph axes, allowing report authors to visually separate category groups and improve readability when working with hierarchical data.

Unplanned
Last Updated: 07 Jul 2026 14:07 by Prashanth
Created by: Prashanth
Comments: 0
Category: Reporting
Type: Feature Request
1
Currently, the LabelAngle property of a graph axis only affects the outermost category labels. For graphs with subcategories, there is no way to rotate the inner category labels independently. I would like to have control over the rotation of all category label levels, not just the outermost one.
Completed
Last Updated: 18 Aug 2026 07:58 by ADMIN
Release 2026 Q3
The Import Code File Wizard incorrectly displays a warning in a non-English locale despite the build completing successfully. The warning appears to be triggered by localized culture settings and does not reflect an actual build issue.
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