Unplanned
Last Updated: 19 Feb 2026 15:33 by Scott

In the Report Book’s Edit Parameters dialog, non‑mergeable parameters only show index 0 in the dropdown, even when multiple report instances are present:

Other indexes can be applied only by manually typing the value into the combo box, but this behavior is not intuitive and makes it unclear that parameters can be assigned per instance.

Completed
Last Updated: 04 Mar 2026 13:12 by ADMIN
Release 20.0.26.304

When using a report parameter of type string whose value resembles a date format (e.g., "3036-01"), the System.Text.Json serialization logic used by Telerik Reporting incorrectly treats the value as a date instead of a plain string. As a result, the parameter is serialized and displayed as a parsed DateTime value rather than the original text, leading to unexpected outputs such as "3036-01-01T00:00:00.0000000":

Unplanned
Last Updated: 26 Feb 2026 14:51 by Pavel

We are using "@progress/telerik-angular-native-report-viewer": "29.26.211"

Seems options Fit to page/Fit to width are mixed

Fit to page does what Fit to width should be doing and vice versa

Completed
Last Updated: 03 Apr 2026 07:38 by ADMIN
Release 20.0.26.402

I am using the ObjectDataSource component of the Standalone Report Designer. However, I get errors mentioning that types from `System.Private.CoreLib` cannot be loaded. This used to work in version 19.3.26.121. The workaround in the latest version is to manually register the `System.Private.CoreLib` assembly in the designer through `assemblyReferences` (File -> Options -> Add).

Unplanned
Last Updated: 11 Mar 2026 15:48 by Winnie

WPF report viewer crashes when launching it the second time. The issue appears to occur only when having a trial license activated.

System.Windows.Data Error: 23 : Cannot convert '<null>' from type '<null>' to type 'System.Uri' for 'en-US' culture with default conversions; consider using Converter property of Binding. NotSupportedException:'System.NotSupportedException: UriTypeConverter cannot convert from (null).
   at System.ComponentModel.TypeConverter.GetConvertFromException(Object value)
   at System.ComponentModel.TypeConverter.ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value)
   at System.UriTypeConverter.ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value)
   at MS.Internal.Data.DefaultValueConverter.ConvertHelper(Object o, Type destinationType, DependencyObject targetElement, CultureInfo culture, Boolean isForward)'
Exception thrown: 'System.NullReferenceException' in Telerik.ReportViewer.Wpf.dll
Object reference not set to an instance of an object.

Unplanned
Last Updated: 09 Apr 2026 14:08 by ADMIN
Scheduled for 2026 Q2

When an HtmlTextBox contains a large HTML ordered list that exceeds a single page height, the generated PDF is cut at the pixel-level page boundary rather than at a text line boundary. This results in a line of text being visually split mid-glyph — part of the line appears at the bottom of one page, and the remainder is orphaned at the top of the next page.

To reproduce, create an HtmlTextBox that contains an <ol> with lots (>40) <li> items, so they span more than one physical page and export to PDF. Observe the page boundary where the list crosses a page — the split occurs mid-line.

Expected behaviour:
The renderer splits the HtmlTextBox content at a complete line boundary, consistent with how a plain TextBox behaves.

Actual behaviour:
The split occurs at the pixel-level page margin, cutting through a rendered text line.

  
Unplanned
Last Updated: 03 Apr 2026 08:15 by Khaled Salman

I have a Telerik report designed in the Standalone Report Designer. In the HTML5 Report Viewer, the report seems to be correct, but when I export the report in PDF, the word order changes.

The problem occurs in the HTMLTextBox when rendering in PDF and previewing in the Standalone Designer with both Skia and GDI+.

In the TextBox, the same text is displayed as expected.

When previewing in the HTML Report Viewer, the Arabic text seems fine.

Unplanned
Last Updated: 03 Apr 2026 10:29 by Sachin
When exporting a report to PDF with EnableAccessibility=True, PAC reports multiple "Invalid use of a 'TD' structure element" errors. The report has a List that contains SubReport items, and each subreport has its own Tables. The generated PDF structure tree places orphan /TD elements directly under /Sect instead of under /TR.
Unplanned
Last Updated: 06 Apr 2026 13:23 by Vahidreza
Created by: Vahidreza
Comments: 0
Category: Reporting
Type: Feature Request
1

Currently, logarithmic axes do not support the LabelStep and MajorStep properties, which makes it difficult to control label density and avoid visual clutter for larger data ranges.

Adding support for these settings (similar to numerical scales), or providing a way to conditionally hide axis labels, would significantly improve readability and axis customization.

In Development
Last Updated: 07 Apr 2026 07:48 by ADMIN
Scheduled for 2026 Q2 (May)
Created by: David
Comments: 0
Category: Reporting
Type: Feature Request
1

The rendering extensions are currently loaded by the Telerik.Reporting.Processing.RenderingExtensionManager all at once in the main thread when the report processing starts. This is redundant because one report processing requires one rendering extension to be loaded.

Declined
Last Updated: 24 Apr 2014 12:45 by tomcrusader
Created by: tomcrusader
Comments: 2
Category: Reporting
Type: Feature Request
0
Running the report book demo in Chrome v "34.0.1847.116 m" under Windows 8 crashes the Silverlight plugin. This does however not happen under I.E 11.

http://demos.telerik.com/reporting/report-book/silverlight-demo.aspx
Declined
Last Updated: 31 Jul 2014 12:59 by Kevin
Created by: Kevin
Comments: 2
Category: Reporting
Type: Feature Request
0
I would like to be able to write an expression that will call a user function when the ItemDataBound event fires for the report.  This would allow me to wire up the custom functionality that we have built so that the user can see the result from the preview in the designer.  Currently the user has to go to a preview window in our application to see the result but if I had a way to wire the ItemDataBound event for the report then I could make it possible to see the result without leaving the designer.  

I thought that if you made this possible for the report it probably would make sense to enable it for all controls since they all have the the ItemDataBinding and ItemDataBound events.  In my case I don't know how I could implement this any other way because it needs to run after the binding has completed for the entire report.
Declined
Last Updated: 20 May 2014 13:44 by ADMIN
Created by: Binay
Comments: 1
Category: Reporting
Type: Feature Request
0
I want to download patch Q3_2012_SP1_v6_2_13_110 for reporting but unable to get it. I unable to find the link. could you provide link for this?
Declined
Last Updated: 25 Jun 2014 12:09 by ADMIN
Hi Telerik!
I spent lots of time investigating the following situation.
For some reason the editor that I used to modify Telerik.ReportDesigner.exe.config file switched xml elements names to lowercase.
ReportDesigner was not started at all in that case. Even no error message was shown.
I had to explore system events logs and found that ReportDesigner.exe throwed an System.IO.FileLoadException.
But still with no details.
Only after hours of exploring I found the problem with xml-element names and fixed it.
I think if you add .config file validation with user-friendly messages during ReportDesigner starting it will help.
Unplanned
Last Updated: 31 Oct 2016 16:49 by Dmitriy
Created by: Dmitriy
Comments: 0
Category: Reporting
Type: Feature Request
0
Hello.
I'm about a world map component. For custom map services like  GeoServer or MapServer more useful to use a Web Map Service (http://ru.wikipedia.org/wiki/Web_Map_Service). Telerik Reporting supports only Tiles services like Web Map Tile Services for base maps. It would be more flexible to add WMS as a base map and as an overlay layer as well. 
Declined
Last Updated: 10 Sep 2021 06:33 by Rahul
Created by: Mhd.Ahd
Comments: 2
Category: Reporting
Type: Feature Request
0
When using multi-child select statement like the below:

SELECT ORG, C1, C2, ... FROM (
   (SELECT X FROM Y WHERE Z1 = xxx AND Z2 = :param1 AND DATE BETWEEN :param2 AND :param3) C1,
   (SELECT X FROM Y WHERE Z1 = yyy AND Z2 = :param1 AND DATE BETWEEN :param2 AND :param3) C2,
   ...
)
Then binding with report parameter will be like:
param1 = rpt_param1
param2 = rpt_param2
param3 = rpt_param3

The an error occurred while excuting the query in the datasource wizard.
Also, some time the wizard accepts the query but the preview mode will display the same error.
The error is "ORA-01008 : Not all variables bound"

______________________________________
Workaround: Don't use the same query parameter in more than one child select statement. Create new datasource parameters per each select statement; then bind them all to the same report parameter. 

SELECT ORG, C1, C2, ... FROM (
   (SELECT X FROM Y WHERE Z1 = xxx AND Z2 = :param11 AND DATE BETWEEN :param12 AND :param13) C1,
   (SELECT X FROM Y WHERE Z1 = yyy AND Z2 = :param21 AND DATE BETWEEN :param22 AND :param23) C2,
   ...
)
Then binding with report parameter will be like:
param11 = rpt_param1
param21 = rpt_param1
param12 = rpt_param2
param22 = rpt_param2
param13 = rpt_param3
param23 = rpt_param3
______________________________________
Products:
* Report Designer v2014.Q2
* Oracle Database 10g1, 10g2 or 12c
* Oracle Client: ODTwithODAC 12.1.0.1.0 Or Less
Completed
Last Updated: 29 Aug 2017 12:51 by ADMIN
we have the ability to conditionally display a label on the x-axis.  Thereby displaying only some x-axis dates, for instance, but not all of them.  Can you enhance the product to allow for the displaying of tick marks only for the values (dates in this case) displayed?
Completed
Last Updated: 24 Nov 2014 12:05 by ADMIN
Created by: Evans I.T.
Comments: 1
Category: Reporting
Type: Feature Request
0
When might Telerik come out with a standalone reporting tool?
Declined
Last Updated: 07 Oct 2015 12:35 by ADMIN
Created by: John
Comments: 2
Category: Reporting
Type: Feature Request
0