dotUltimate Versions

• AI Licensing
  • Error message "AI Free license cannot be used when AI Pro Trial is available".
• Installation
  • Provide feedback button does nothing.
• IntelliSense (Code Completion)
  • Completion window width is not collapsing back if it was scrolled by mouse wheel.
• Licensing and Evaluation
  • ReSharper attempts to refresh License Vault ticket offline and shows an error before 48 hours.
  • License Vault: Only one VS instance receives a valid offline ticket when starting two instances offline.
  • License Vault: Offline ticket from one VS version is not reused by another VS version.
  • License Vault: ReSharper requires license authentication for each active VS instance.
  • ReSharper loses authentication on restart.
• Live Templates
  • Templates Editor: "Choose Macro" dialog is not styled properly.
• Platform - VS Integration
  • The specified option is not valid in this scope: TextViewHost[PATH].
  • System.ObjectDisposedException: Cannot access a disposed object. Object name: 'LeftEdgeSpacerMargin'.
• UI
  • AI Assistant tool window in VS 2026 doesn't draw the corners properly.
  • Wrong Test Pass Icon in Visual Studio 2026.
  • Indents for selection are not symmetrical.
  • "Invisible" fluent icons on the R# settings page with dark theme in VS.
  • Incorrect corner radius in JPM.
• XAML
  • Xaml intellisense incorrectly sees Maui Community Toolkit AppThemeColor bindings as invalid (Maui).

• NuGet
• "Open the NuGet PMC" action doesn't work.

• IntelliSense (Code Completion)
  • Completion window width is not collapsing back if it was scrolled by mouse wheel.
• Live Templates
  • Templates Editor: "Choose Macro" dialog is not styled properly.
• Platform - VS Integration
  • Noticeable resizing of Alt-Enter submenus on non-main display with different scaling.
  • "Middle-click to scroll" locks cursor in hand mode for the file.
  • Visual Studio becomes topmost window after opening Find Results tool window.
• UI
  • AI Assistant tool window in VS 2026 doesn't draw the corners properly.
  • Wrong Test Pass Icon in Visual Studio 2026.
  • "Invisible" fluent icons on the R# settings page with dark theme in VS.
• XAML
  • Compiled bindings: adding x:DataType breaks the code analyzer.
  • MAUI Binding data source is not recognized by IntelliSense.

• Android Plugin
  • Running Release builds directly from within Rider causes the app to crash on launch due to missing symbols.
  • Error XA5300 : The Android SDK directory could not be found.
• Build
  • Rider doesn't rebuild/apply changes in referenced library when building a dependent project.
  • MAUI App Deployment: Failed to find application bundle after deployment.
  • Metadata file 'MauiApp7/MauiLib1/obj/Debug/net10.0-ios/ref/MauiLib1.dll' could not be found.
  • Fix failed MAUI solution build via Console because of APK file isn't found.
  • "Unable to evaluate the APK file path" error after building the solution.
• Code Analysis
  • 'and!' in task expression gives error in F# script.
  • Provided types from F# type provider are not detected.
• Quick Documentation
  • Quick documentation is not shown on hover (HtmlProvider)RIDER 135675 Issue not yet fixed.
• VCS - Git
  • Show diff preview on single click still available in settings of Commit tab.
• No subsystem
  • Inlay rename refactoring works slow with AI suggestions.

ReSharper

• XAML
  • Avalonia: Added support for null conditional operator in bindings.
  • Added support for Avalonia 12 bindings.

Rider

• CMake
  • Project with both sln and cmake may show wrong UI.
• Code Analysis
  • Suppressed warnings appear in solution-wide analysis.
• Code Highlighting
  • Code highlight broken on "_g.cs" source generator generated file.
• Debug
  • Rider C++/LLDB: Natvis visualization displays enum values as numeric instead of enum names.
  • Can't set variables via debugger.
  • [Split Debugger, RemDev] Navigate to thread in parallel stack action doesn't work.
• Debug - Evaluation
  • Rider C++/LLDB: Inconsistent display of enum flags in debugger.
• Global Navigation and Search
  • 'Go to File' highlights the whole file as usage.
  • Search everywhere: search with prefix filters leads to no results if the filter is written before the request.
  • FQN lookup doesn't work for symbols in 2026.1 versions.
• Hot Reload
  • Hot Reload 3 dots button doesn't have a tooltip.
• Internals
  • Force-disable support for Wayland in Rider 2026.1.
• Live Templates
  • Live templates: neither Constant value nor Comma-delimited list of values are displayed.
• MCP
  • Fixed reformat API for MCP tools.
  • Rider MCP build_project tool does not work.
  • Rider MCP get_file_problems does not work.
  • Move Type to Another Namespace for MCP.
• Project Systems
  • Creating a Unreal class from "All classes" tap creates class from Common list.
  • Multiple internal errors in the file system cache with Unity 6.
  • File-based apps that target older frameworks break directive prefix.
• Project Templates
  • Can't change Aspire templates package.
• Refactorings
  • Not able to rename a file.

ReSharper

• Code Analysis - VB.NET
  • Incorrectly flags GetType() call.
• Command Line Tools
  • Running jb command tool causes multiple Roslyn exceptions.
• Crash
  • "ExecuteIfAlive after termination of lifetime took too much time" Runtime error on closing Visual Studio.
• Licensing and Evaluation
  • Error 403 requesting license server because of missing User-Agent header.
• Live Templates
  • Comma-delimited list of values is empty after upgrade.
• Platform - Component Model
  • CSharpLanguageLevelProjectProperty-related exception occurs when opening the options menu.
• Platform - Project Model
  • ReSharper linting broken for .NET 8 and .NET 9 projects after Visual Studio 2026 installation.
• Platform - VS Integration
  • Flickering and lag issues in ReSharper integration after VS 2026 update to 18.4.0.
  • Multi-Caret copy copies everything into a single line.
• Psi - VB.NET
  • Fail to parse xml in named argument.
• Refactorings
  • Move to namespace context action no longer working.
  • Add 'params' modifier should not be available on extension receiver parameter.
• UI
  • Completion (intellisense) Fluent style icons.
  • Regression: Unreadable unit test group ordering.
• XAML
  • Avalonia add support for null conditional operator in bindings.
  • Support Avalonia 12 bindings.
• No subsystem
  • Ensure logs are flushed when an error Is logged.

ReSharper C++

• C++
  • u8 string and character literals in C should have unsigned char underlying type.
• Caches
  • Redundant memory usage in UE4AssetsCache.
  • Signals for monitoring added/removed symbols.
  • Hang in CppLinkageEntityCache.FindEntitiesBySymbols.
• Code Style - Formatter
  • Do not place the semicolon on a separate line in a do-while statement.
• Project Model
  • Unresolved symbols are not highlighted in red inside a newly created file.
  • C language standard is wrong in a CMake project using clang.
  • ClangCL toolset shouldn't be used when the toolset name is Clang.
• Unreal Engine
  • Hang in blueprints cache.
• No subsystem
  • STOFL in type presentation.

ReSharper 2026.1

• Enhanced performance monitoring - All runtime behavior insights can now be displayed in a single tool window.
• Expansion beyond Visual Studio - Use ReSharper in VS Code-compatible editors like Cursor and Google Antigravity.
• Improved C# support - Better handling of extension members, new inspections, and early support for upcoming features.
• More stable Out-of-Process mode - Over 70 fixes for improved reliability.
• Modernized editor UI - Updated completion, tooltips, and popups with better scaling.

ReSharper C++ 2026.1

• ReSharper C⁠+⁠+ 2026.1 delivers faster startup times and reduced memory usage. This release adds support for the C⁠+⁠+⁠26 #embed directive and other new language features. Coding assistance improvements include auto-import for C⁠+⁠+⁠20 modules and new postfix completion scenarios. Unreal Engine developers benefit from improved Blueprint integration and compatibility fixes for the upcoming Unreal Engine 5.8.

Rider 2026.1

• Rider 2026.1 brings improved support for the .NET ecosystem and game development workflows, as well as refinements to the overall developer experience.

Rider

• Debugger is breaking on BreakForUserUnhandledException although exceptions are disabled.
• NETSDK1005 error when building projects with netstandard2.0 dependency project references.
• Rider MCP project-related tools return an empty list.
• Can no longer deploy APK to emulator or physical device after 2025.3.2 update.
• Can't upload APK file into physical Android with 2026.1 EAP1 and 2025.3.2 because of Fast Deployment.
• Failed to upload application APK file to device.
• RiderLink Installation navigation button doesn't work.
• Designer can't resolve dynamically loaded types.
• Aspire template does not fit.
• Available Packages dropdown overlaps Change Template Version dialog.
• Rider no longer finds Unity 'CGIncludes' shader folder (as of at least 6.3.2f1) because it moved.
• Re# CLT (inspectcode) ignores "namespace providers for Unity".
• Plugin suggester based on project dependencies doesn't work.
• Aspire template projects update.
• Console output does not auto-scroll when running TUnit tests via Run.
• Install .NET Aspire button not working.
• Rider scrolls to the wrong place in the file after jumping to implementation.
• Incorrect TFM is shown in the "Run/Debug Configurations".
• Warnings when compiling RiderLink.

ReSharper

• ReSharper not working with .slnx Solution and AdvancedInstaller Project.
• "CS1998" false-positive warning: "Async method lacks 'await' operators and will run synchronously".
• InitializeComponent being incorrectly flagged in MAUI projects.
• "Generate Partial" + "partial keyword completion" for event uses get/set instead of add/remove.

Rider

• Agent Client Protocol (ACP) agent registry support - You can now browse and install ACP-compatible AI agents directly from a curated registry in the AI Chat tool window. ACP defines a standard protocol for AI coding agents, letting Rider connect to any compatible agent without custom integrations. Users can add agents from the registry and use them immediately in AI Chat.

Rider

• Plugin suggestions based on project dependencies are shown again.
• Go to Implementation and Ctrl+Click navigation no longer scrolls the editor to an unexpected position after opening the target file.
• Remove (Ctrl+X) in the Find tool window now removes the selected entry from the results list again.
• InitializeComponent calls in .NET MAUI projects are no longer incorrectly flagged as errors by code analysis.
• .NET MAUI apps can now be deployed and run on physical Android devices when a RuntimeIdentifier is explicitly specified in the project file.
• Solutions with multi-targeted .NET projects (e.g. MAUI projects targeting both platform-specific and plain .NET frameworks) now build correctly from a clean state, including projects that reference them.
• Hot Reload now works correctly in projects that use the C# interceptors feature.
• Hot Reload now works correctly for Blazor WebAssembly standalone projects targeting .NET 10.
• Unreal Engine code vision inlays are now vertically centered relative to the line they annotate, restoring correct alignment in the editor.
• Solution-Wide Error Analysis now reuses precalculated diagnostics from document analysis, reducing update latency while typing.
• The ConstantExpected inspection now respects the [ConstantExpected] attribute transitively and no longer raises warnings when values are passed through annotated parameters.
• The OutParameterValuesAlwaysDiscarded inspection no longer reports false positives for out parameters used in C# 14 extension member syntax.
• Recursive calls are now correctly indicated in the gutter for C# extension members.

ReSharper

• InitializeComponent calls in .NET MAUI projects are no longer incorrectly flagged as errors by code analysis.
• The ConstantExpected inspection now respects the [ConstantExpected] attribute transitively and no longer raises warnings when values are passed through annotated parameters.
• The OutParameterValuesAlwaysDiscarded inspection no longer reports false positives for out parameters used in C# 14 extension member syntax.
• Recursive calls are now correctly indicated in the gutter for C# extension members.
• The bundled Unity plugin now works correctly in ReSharper Command Line Tools.
• Fixed an issue that could prevent memory profiling from starting on systems where the Microsoft-Windows-RPC ETW provider is already in use (for example, by security software).