• VS2019 Preview 4 broke conditional compilation symbols in C#
• API has been deprecated
• Android debugging not working in latest release 16.4 "Debuggee returned error code INVALID_ARGUMENT"
• Fixed a frequent UI delay that can occur while using the editor.
• Fixed a crash when an attribute constructor is decorated with itself and Nullable Reference Types is enabled while using C#.
• Fixed an issue that resulted in Visual Studio failing to start or crashing on C# solution load on certain Virtual Machine setups.
• Fixed a bug where user defined conditional compliation symbols are lost when the build properties page is reopened. 

Nearly 4,000 files, almost 2 million lines changed. 

Two years in the making, we finally have our first beta release of Bootstrap 4. In that time, we’ve broken all the things at least twenty-seven times over with nearly 5,000 commits, 650+ files changed, 67,000 lines added, and 82,000 lines deleted. We also shipped six major alpha releases, a trio of official Themes, and even a job board for good measure.  

• C++ Linux project - Remote header sync is broken in Visual Studio 16.3
• Visual Studio 16.3 opens some files with notepad
• Fixed an issue with the Show Output window either closing too quickly.
• Fixed an issue where Visual Studio 2019 stops responding in several scenarios, including opening a solution, changing solution configuration, and closing a solution. 

• Fixed known issue: Merge tools in "Resolve conflicts" not shown.