• Merge Conflict: "Take Source"/"Keep Target" is missing
• Crashes when trying to debug uwp application
• Unable to select target platform azure v12 for database project
• Fixed crashes or errors that can occur when running Visual Studio after an install action that requires a reboot.
• Fixed an issue deploying Xamarin.Android apps. This peviously required a manual uninstall of the app from the device or emulator.
• This change fixes a bug where the compiler may sometimes incorrectly remove an instruction in a C++ coroutine. 

• Solution Explorer: touch pad gesture scroll is too sensitive.
• C++/CLI: std::move causes std::unique_ptr parameter to be destructed before function call.
• live share shows "failed to sign in" .
• VS symbol search fails to find symbols.
• Undo randomly stops working.
• VS "Go to defintion" functionality frequently does not work.
• Linux CMake Intellisense HeaderCache not downloading headers for 15.8.0 Preview 4.0.
• When opening a project that requires elevated permissions, Visual Studio does not automatically open the selected project after restarting elevated.
• vcpkgsrv.exe crashes.
• New Visual Studio Code keymap not applying?. 

For this release, we have some exciting new features, new checking flags, editor productivity updates, and speed improvements. Let’s get a look at what 4.1 brings!

• Template Literal Types
• Key Remapping in Mapped Types
• Recursive Conditional Types
• --noUncheckedIndexedAccess
• paths without baseUrl
• checkJs Implies allowJs
• React 17 JSX Factories
• Editor Support for the JSDoc @see Tag
• Breaking Changes  

• Fixed: Android SDK not found after upgrade to 16.2
• Fixed: VS won't start after update with message tht setup is complete.
• Fixed an issue resulting in an installer verification or manifest verification fail when user is updating through the setup UI.
• Fixed an issue that caused Visual Studio to crash or stop responding during shutdown.
• Fixed a timing-related issue while saving changed Xamarin.Android project properties or building the project that resulted in the product to stop responding.
• Fixed an issue with Visual Studio crashing when C# users typed above a namespace.
• Fixed an issue preventing SSIS packages from successfully running in some circumstances after reloading a solution. 

Integrated Terminal improvements - Find support, select/copy multiple pages.
Command Palette MRU list - Quickly find and run your recently used commands.
New Tasks menu - Top-level Tasks menu for running builds and configuring the task runner.
Automatic indentation - Auto indent while typing, moving, and pasting source code.
Emmet abbreviation enhancements - Add Emmet to any language. Multi-cursor support.
New Diff review pane - Navigate Diff editor changes quickly with F7, displayed in patch format.
Angular debugging recipe - Debug your Angular client in VS Code.
Better screen reader support - Aria properties to better present list and drop-down items.
Preview: 64 bit Windows build - Try out the Windows 64 bit version (Insiders build).
Preview: Multi-root workspaces - Open multiple projects in the same editor (Insiders build).
 

These are the customer-reported issues addressed in 15.8.4:

• Constexpr function with explicit (void) parameter crashes MSVC 15.8.0 release.
• TypeScriptLspCodeActionProvider encountered an error and has been disabled.
• The 'Shared Web Components' package did not load correctly.
• Editing CSS with Browser Link enabled can crash Visual Studio.
• Service Fabric Deployment fails in 15.8.0.
• Incorrect error for constexpr pointer to members with VS2017 15.8.
• Constexpr doesn't support __declspec(dllimport) in VS2017 15.8.
• C++ VS 2017 Update 8 difference in member function pointer between C++14 and C++17 modes leads to crashes.
• TestExplorer locking up UI in latest build.
• [WebKit] "Already defined symbol" for static template member definition (regression).
• VS 15.8.0 Internal compiler error.
• Internal compiler error in constexpr function.
• Test Explorer Window remains blank with Express.
• Visual Studio 2017 fails to open on FIPS-enabled machine..
• VS2017 15.8 Internal Compiler Error 'msc1.cpp', line 1518 when evaluating simple constexpr function.
• Fatal error C1001 after update to VS 15.8.0.
• Migrating to VS2017 15.8: Internal compiler error when using constexpr functions as template parameters.
• Internal compiler error when compiling a template function with a constexpr in VC++ 15.8.0.
• Code generated by VC 15.8.1 compiler lead to crash. 

.NET Core 3 will be supported in Visual Studio 2019, Visual Studio for Mac and Visual Studio Code. Visual Studio 2019 Preview 2 was released last week and has support for C# 8. The Visual Studio Code C# Extension (in pre-release channel) was also just updated to support C# 8. 

• XAML designer for UWP - control properties not displayed
• UWP XAML designer doesn't update elements on updating XAML code
• XAML properties and document structure
• Properties window not showing the properties when clicking an object
• Unable to see properties of any items
• Installation error when trying to connect to the Mac: "The Xamarin.iOS version installed on 'x' (12.8.0.2) is newer than your version".
• Fixed right click solution name in titlebar VS crash bug.
• Improved performance for customers with the Azure workload installed.
• Corrected errors during restore and build on SDK-based projects that use 3rd party SDKs to target UWP platforms.
• Fixed a bug in C# compiler where it was not properly warning customers about incomplete interface implementations.
• Improved error messaging in Visual Studio Tools for Kubernetes.
• Fixed error when adding a comment in PR for SymbolCheck. 

Top Issues Fixed in Visual Studio 2019 version 16.6.0

• When New Git experience feature flag is enabled, a message will appear in Team Explorer guiding users to the new Git tool window.
• Fix for intermittent UI delay while closing VS when WinForms .NET Core designer is in open state.
• Fixed issues creating projects using type providers, throwing missing method exception at runtime.
• Fixed project creation for .NET framework projects.
• New find in files experience respects options in Tools-Options-Find and Replace pane.
• Fixed a bug where Git repository does not change when closing a Folder and opening a Solution.
• Fixed bug when building iOS app using full debug symbols.
• Added back browing of Mac Distribution provisioning profiles and certificates from Windows.
• Fixed a bug causing Visual Studio 2019 to stop responding when working with Xamarin projects on certain scenarios.
• Added keyboard shortcut for "Copy with Headers" option in SQL Script Results Grid
• SSDT users will now be able to set and view sensitivity properties for all version above SQL Server 2008
• Improve Connection Properties dialog for accessibility users.
• Fixed occasional crashes when using Tested By Code Lens indicator.
• Ensure auto population of text in Find in files is as per legacy behavior.
• Ensure left arrow key behavior in find in files is correct.
• An issue blocking C++ users of the C++20 Ranges library from using algorithms.