In Development
Last Updated: 11 Sep 2026 11:19 by ADMIN
Scheduled for 2026 Q3 (Oct)

I have localized a report with a Graph in the 'ar-SA' culture.

When exporting to PDF from the viewer, the report is generated as expected. In the Report Viewer's Preview, though, the Graph Legend and Labels are not correct:

I am using Native Blazor Report Viewer, but the problem also reproduces in the HTML5-based web viewers, with all the themes I have tested.

In Development
Last Updated: 11 Sep 2026 11:12 by ADMIN
Scheduled for 2026 Q3 (Oct)
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.

In Development
Last Updated: 03 Sep 2026 12:44 by ADMIN

I have a CS report that contains a SubReport with InstanceReportSource. I have it in a .NET 10 Classlibrary project.

I tried to edit this report as a coded report in SRD.NET. However, when I saved the report, in the 'designer.cs' file, the value assigned to the ReportSource of the SubReport was set to 'userreport1' that is not instantiated and throws.

In Development
Last Updated: 17 Aug 2026 14:43 by ADMIN
Telerik Reporting 2026 Q1 (20.0.26.211) fix to 'Paged report layout now supports repeatable table group headers/footers' is not working when embedded table (within a parent embedded table) spills on to the next page. The parent-embedded-table does not repeat in the header.

In Development
Last Updated: 17 Aug 2026 07:51 by ADMIN

The attached sample has a simple table with two row groups, and "header" rows created via "Insert Row -> Outside Group - above".
The groups have "keep together" set.

But despite this, the header rows render at the bottom of one page, with data rows on the following page. This should never happen, I can't think of any case it would be expected (it would be like having "Chapter 2" at the bottom of a page when the text for it starts on the next page). 

I also have a sample with just 1 row group, but with 2 detail rows, and the same thing happens. It only appears to work when there's just 1 row group and 1 detail row.

In Development
Last Updated: 05 Aug 2026 16:43 by ADMIN
The Group Footer rows of my table are displayed thinner than the rest of the table rows in PDF rendering. However, they are designed the same as the Group Header Rows and the Detail rows.
In Development
Last Updated: 03 Apr 2026 07:22 by ADMIN
When I export a report to MS Word that includes a bullet list and one of the items in the list spans two pages, the item gets two bullets in MS Word: one on the first line of the bullet, which is correct, and on the first line of the bullet that appears on the next page. This second bullet should not appear. The attached screen shot shows what I mean.
In Development
Last Updated: 11 Nov 2025 13:45 by ADMIN

The Initialize method in ReportViewer.cs is called from both the OnLoaded and OnApplyTemplate methods, which in turn calls the AttachModelEventHandlers method. This leads to it adding the event handlers to the model twice every time it is loaded. The DetachModelEventHandlers is only called once (in the OnUnloaded method), so if you keep unloading and reloading the control, it adds 2 event handler invocations but removes only one. This means each one is called at least twice (if you have only loaded the control once), then 3, 4, 5, etc times if you keep unloading and reloading it.

I've worked around this by adding code to my wrapper class to prune the duplicated handlers for now, but this needs fixing in the base code.

In Development
Last Updated: 24 Sep 2025 10:48 by ADMIN
Scheduled for 2025 Q4

I have updated to version 19.2.25.813 of Reporting, and when I try to build a project that has Reporting references, I get the following warnings:

Telerik and Kendo UI Licensing warning TKL102: Your current license has expired and is not valid for Telerik Document Processing Libraries version 2025.2.807.20.

There are no Telerik Document Processing dependencies in my project, but I still get the warning.

In Development
Last Updated: 23 Jul 2025 15:13 by ADMIN
Scheduled for 2025 Q3

The Web Report Designer does not entirely comply with CSP standards, necessitating the use of the 'unsafe-eval' directive in our CSP policies to enable its functionality.

This directive poses significant security risks and undermines the purpose of implementing CSP in the first place. Please remove this requirement.

In Development
Last Updated: 30 May 2025 11:16 by ADMIN

I set globally the culture on the Linux Ubuntu Docker Container. Interestingly, the negative currency with en-US and fr-CA was displayed with the '-' sign rather than in brackets.

This was reproduced even in the values set with the Text Function FormatWithCulture(cultureName, format, args). The function displayed wrong formatting also on Windows, even in the Standalone Report Designer for .NET 8.

When the global culture on Windows was en-US, the negative decimal value formatted without the FormatWithCulture function was displayed correctly in .NET 8.

In the .NET Framework, the negative currencies were displayed as expected in all scenarios.

I have linked also a muted video showing the issue.

In Development
Last Updated: 28 Apr 2025 10:34 by ADMIN
Created by: Support
Comments: 3
Category: Reporting
Type: Bug Report
4

If I use an HTML5-based Report Viewer with the default CONTINUOUS_SCROLL page mode and I start scrolling to the next page, the Get Document Page request is made multiple times for the same page.

If I move to the next page via the toolbar buttons or if I use the SINGLE_PAGE page mode, then problem is not reproduced.

In Development
Last Updated: 12 Aug 2024 07:27 by ADMIN
Scheduled for 2024 Q4

Telerik.Reporting.nupkg has a dependency on ResXResourceReader.NetStandard.

Our 3rd party security audit has found the missing Digital Signature of this DLL. A digital signature would aid in verifying its authenticity and integrity.