Completed
Last Updated: 17 Jul 2025 07:51 by ADMIN
Release 2025 Q3
Created by: Ilya
Comments: 0
Category: Reporting
Type: Bug Report
2
Currently, the Web Report Designer uses an old version of jQuery UI - 1.12.1, please update it.
Completed
Last Updated: 23 May 2025 08:03 by ADMIN
Release 2025 Q2
Provide method to add dynamically generated type to the white list of type validator. This prevents type validation from being disabled.
Unplanned
Last Updated: 01 Apr 2025 09:14 by Patrick

When trying to open reports from an assembly in the Standalone Report Designer so that they can be imported, if there are types that inherit from Telerik.Reporting.Report that do not have a parameterless constructor, this will cause an exception as it is required for the report types to have such a constructor, otherwise, the wizard cannot import them into TRDP.

In this scenario, the report types that do not have a parameterless constructor should be written to the trace or in the exception message dialog so that the user can see which are the problematic types and correct them.

Unplanned
Last Updated: 02 Apr 2025 08:32 by Patrick

I have created an abstract class in my report library that inherits from Telerik.Reporting.Report. When I try to load the project's assembly in the Standalone Report Designer to import those reports as TRDP, an exception is thrown while the application tries to load the assembly that there are report types that do not have a parameterless constructor.

To resolve the issue, I had to remove the 'abstract' modifier. However, that should not be necessary. The wizard should ignore abstract classes or at the very least, let me import the other report types while displaying a message that there are report types with parameterless constructors.

Unplanned
Last Updated: 09 Apr 2025 09:27 by ADMIN
1. Toolbar Button Events: Request EventCallback properties for the toolbar buttons, much like OnRenderingBegin and OnRenderingEnd. The event(s) should be fired when the respective toolbar button is clicked. At a bare minimum, request that the 'Stop Rendering' (Cancel) button fire its own event (OnRenderingCancel) or at least fire the existing OnRenderingEnd.

2. Toolbar Button Properties: Along with this, since IReportViewerTool exposes the Icon and CommandName, request it also expose an Enabled property. At a bare minimum, it would be helpful if, while rendering, all but the 'Stop Rendering' (Cancel) and Pager buttons are disabled by default or by setting a new viewer property.

Currently we must use JSInterop to accomplish these things.

The reason we are managing these things in the first place is because we are using Custom Parameter Editors (CPEs). When a long-running report is in the process of rendering, and a user changes a parameter and re-requests the report (either via our 'Retrieve' button or a viewer toolbar button), an unhandled exception occurs in _content/Telerik.ReportViewer.BlazorNative/js/reporting-blazor-viewer.js. So we make use of the OnRenderingBegin and OnRenderingEnd events to disable/enable the CPEs. The problem arises when the 'Stop Rendering' (Cancel) button is clicked. Since we cannot detect the button click, our CPEs remain disabled.
Need More Info
Last Updated: 13 May 2025 08:07 by ADMIN
Created by: Stephan
Comments: 3
Category: Reporting
Type: Bug Report
2

Hello,

the search results in a PDF generated with report is not correct. Again...

Please fix this bug and add this scenario to your tests.

 

Steps: Search for a text in a pdf.

Unplanned
Last Updated: 05 Jun 2025 13:43 by William
I have a report with a textbox that displays a date. The width of the textbox is big enough to fit the date on one line, and it does so with GDI, however, when using Skia graphics engine - part of the text is wrapped on the next line despite there seemingly being enough space to fit the content:



The above image is from testing in HTML5Interactive rendering with Skia on Windows.
Completed
Last Updated: 02 Oct 2025 09:18 by ADMIN
Release 2025 Q3
I have a report viewer, which renders inside a TabStrip. The tab of the viewer is not opened initially, and therefore its container has the CSS style "display: none" set. As a result, if I initialize the viewer before the tab is displayed, and then open the viewer, it appears broken: the report seems to show nothing but I can see that the number of pages changed so if I print preview or save as pdf I see the report there.
Completed
Last Updated: 17 Jul 2025 07:51 by ADMIN
Release 2025 Q3

I have multiline text in a TextBox item that has its Style > TextAlign set to Center.

It is rendered as expected with the GDI+ graphics engine.

When I switch to the Skia graphics engine in the Standalone Designer .NET, though, some lines are not centered correctly in PDF rendering:

In Preview of the designer, with PNG and OpenXML export the text is shown as expected.

Completed
Last Updated: 02 Oct 2025 09:18 by ADMIN
Release 2025 Q3

When the report contains SVG images with Arc segments, the rendering with Skia may result in the following exception:

Telerik.ReportDesigner.Net Error: 0 : System.InvalidOperationException: Invalid image data.
 ---> Telerik.Drawing.Skia.Exceptions.SkiaNotSupportedException: Exception of type 'Telerik.Drawing.Skia.Exceptions.SkiaNotSupportedException' was thrown.
   at Telerik.Drawing.Skia.Drawing2D.GraphicsPath.AddArc(RectangleF rect, Single startAngle, Single sweepAngle)
   at Telerik.Reporting.Svg.SvgRectangle.Path(ISvgRenderer renderer)
   at Telerik.Reporting.Svg.SvgVisualElement.Render(ISvgRenderer renderer, Boolean renderFilter)
   at Telerik.Reporting.Svg.SvgVisualElement.Render(ISvgRenderer renderer)
   at Telerik.Reporting.Svg.SvgRectangle.Render(ISvgRenderer renderer)
   at Telerik.Reporting.Svg.SvgElement.RenderChildren(ISvgRenderer renderer)
   at Telerik.Reporting.Svg.SvgElement.Render(ISvgRenderer renderer)
   at Telerik.Reporting.Svg.SvgFragment.Render(ISvgRenderer renderer)
   at Telerik.Reporting.Svg.SvgDocument.Draw(ISvgRenderer renderer, ISvgBoundable boundable)
   at Telerik.Reporting.Svg.SvgDocument.Draw(Int32 rasterWidth, Int32 rasterHeight)
   at Telerik.Reporting.Processing.Imaging.SvgImageItem.CreateBitmapImage(RadSvgImage svg, Size targetSizePx)
   at Telerik.Reporting.Processing.Imaging.SvgImageItem.DrawImage(RadSvgImage svg, CreateImageContext context)
   at Telerik.Reporting.Processing.Imaging.SvgImageItem.CreateImageCore(CreateImageContext context)
   at Telerik.Reporting.Processing.Imaging.ImageItemBase.CreateImage(CreateImageContext context)

 

Unplanned
Last Updated: 01 Aug 2025 08:11 by Peter

If I set the ReportSource to the Native Blazor Report Viewer using @bind directive, for example:

@bind-ReportSource="@ReportSource"
It works as expected. However, if I try to do it without a binding, for example:

ReportSource="@(new ReportSourceOptions { ... })"

It causes the viewer to go into a loop of trying to set the ReportSource, and it never renders the report.

Completed
Last Updated: 21 Jan 2026 13:56 by ADMIN
Release 19.3.26.121

My use case is a multi-select parameter that is based on a dataset; and the dataset is filtered by 2 other parameters.

The dependent parameter editor is shown as a SpinButton rather than a multi-select editor in the Blazor Native Report Viewer:

Completed
Last Updated: 14 Nov 2025 11:13 by ADMIN
Release 2025 Q4

I am using the new Coded Reports feature in the Standalone Report Designer for .NET, and I have a class library with reports, that depends on another project.

When I try to load a report from the reports class library, I get an error that the dependent project's assembly cannot be loaded despite being present in the report folder's bin directory.

Unplanned
Last Updated: 03 Oct 2025 13:42 by ADMIN

This is related to Ticket ID 1699907.

Currently, the WinForm report viewer fetches configuration (specifically the connection string for any named connection strings defined in reports) directly from appsettings.json, however, it would be useful if the report viewer could take into account an injected IConfiguration since there are scenarios where the configuration may not exist in appsettings.json or a preferred or more up to date user selected value has been added to the configuration from a different source (such as a userSettings.json or secrets.json).

Some background of my use case:

I have a desktop WinForms application targeting .NET 8.0. It usesTelerik.Reporting 19.2.25.813 and Telerik.ReportViewer.WinForms 19.2.25.813 to display reports.

The reports are TRDX files designed with the 64-bit version of "Report Designer".  The report viewer is being displayed in a dedicated WinForm named FrmReport which configures the reportViewer control to use a UriReportSource pointing to the folder on the user's C:\ drive containing the report files. The reports are designed to use a named connection called ReportsConnection which is configured/saved as a shared connection with Alias ReportsConnection in Report Designer.

The default reports connection string is saved in the appsettings.json file.  Upon application startup users select a database connection from a list of saved/remembered connections and the desktop WinForms application saves the user selected ReportsConnection to a configuration file named userSettings.json.  Both appsettings.json and userSettings.json are configured as sources for IConfiguration with reloadOnChange = true.  After a user selects a database connection and the selected connection string is written to userSettings.json, the configuration is reloaded so that the injected IConfiguration from the service container will have the new, user selected value for ReportsConnection.  At this point, IConfiguration has the updated the named ReportsConnection with the desired connection string, which almost always differs from the default one defined in appsettings.json.

However, when loading the reportViewer, the reports unconditionally connect to the server and database defined in the default connection string from appsettings.json, not the user-selected connection string even though the injected IConfiguration has the updated user selected connection string.
Unplanned
Last Updated: 06 Nov 2025 10:32 by Carl
Currently, the Graph Axes seem to be drawn after the Series, so when they overlap, the corresponding part of the Series lines is not visible.
Completed
Last Updated: 20 Nov 2025 08:52 by ADMIN
Release 19.3.25.1119

When using the Native Blazor report viewer with the latest version of Telerik UI for Blazor (12.0.0), the following exception is thrown:

Unhandled exception rendering component: Object of type 'Telerik.Blazor.Components.TelerikToolBar' does not have a property matching the name 'Adaptive'.

Completed
Last Updated: 21 Jan 2026 13:56 by ADMIN
Release 19.3.26.121

As soon as I reference a .NET 10 assembly containing models, there is a null reference exception that does not appear in EventViewer or Fusion logging at the opening of the Standalone Report Designer for .NET.

Here is a link to a muted video demonstrating how adding assembly references using the UI successfully adds the custom assembly to the designer, as well as the bug when removing the assembly version.

Unplanned
Last Updated: 10 Mar 2026 15:29 by ADMIN
Scheduled for 2026 Q2

I want to set the Table ColumnWidth to a particular value in the Properties of the Web Report Designer. There is no property ColumnWidth as in the Desktop designers, and I tried to set the Size.Width, which is available.

When I increased the Width from the Properties, in design time, there is no change in the column width, only dashed borders indicating the new size when selecting the corresponding TextBoxes. In runtime, though, the new size is respected.

The inconsistency repeats even when I open the saved report in another browser or through another application, hence this is not a caching issue.

Unplanned
Last Updated: 05 Jan 2026 10:02 by ADMIN
Scheduled for 2026 Q1

I had an issue with watermarks being present in the generated PDF despite the license validation passing. In the trace log, I was seeing this:

x.x.x.x.exe Information: 0 : *** ReportProcessor.ProcessReport STARTED ***
x.x.x.x.exe Information: 0 : SQLite x64: v3.50.4
x.x.x.x.exe Information: 0 : 
x.x.x.x.exe Information: 0 : *** ProcessReport #0 "Invoice" STARTED ***
x.x.x.x.exe Information: 0 : *** ProcessReport #0 "Invoice" DONE in 00:00:00.6363067 ***
x.x.x.x.exe Information: 0 : 
x.x.x.x.exe Information: 0 : *** ReportProcessor.ProcessReport DONE in 00:00:00.7891276 ***
x.x.x.x.exe Information: 0 : 
x.x.x.x.exe Information: 0 : License check for assembly Telerik.Reporting, Version=19.3.25.1119, Culture=neutral, PublicKeyToken=a9d7983dfcc261be: True
x.x.x.x.exe Information: 0 : 
x.x.x.x.exe Information: 0 : *** Render Report #0 "Invoice" STARTED ***
x.x.x.x.exe Information: 0 : ReportName: Invoice; DocumentName: Invoice; Extension: PDF
x.x.x.x.exe Information: 0 : DeviceInfo Contents
x.x.x.x.exe Information: 0 : ===================
x.x.x.x.exe Information: 0 : ChangingPermissionType: ""
x.x.x.x.exe Information: 0 : ComplianceLevel: "None"
x.x.x.x.exe Information: 0 : CopyingPermissionType: ""
x.x.x.x.exe Information: 0 : DocumentAuthor: ""
x.x.x.x.exe Information: 0 : DocumentCreator: ""
x.x.x.x.exe Information: 0 : DocumentKeywords: ""
x.x.x.x.exe Information: 0 : DocumentNaturalLanguage: ""
x.x.x.x.exe Information: 0 : DocumentProducer: ""
x.x.x.x.exe Information: 0 : DocumentSubject: ""
x.x.x.x.exe Information: 0 : DocumentTitle: ""
x.x.x.x.exe Information: 0 : EnableAccessibility: "False"
x.x.x.x.exe Information: 0 : EndPage: "0"
x.x.x.x.exe Information: 0 : FontEmbedding: "None"
x.x.x.x.exe Information: 0 : ForceLicenseWatermark: "True"

The issue turned out to be due to caching, but the output puzzled me while I was debugging this. Turned out `ForceLicenseWatermark` is always true (the misleading part), but only has an effect when the license validation fails.

Unplanned
Last Updated: 13 Feb 2026 15:07 by Greg

The HTML5-based report viewers send 404 request to `/sass/fonts/kendo-font-icons.ttf` when font icons are being used: