Legacy Console.ReadKey removed
The ability to use the legacy Console.ReadKey implementation exposed via the System.Console.UseNet6CompatReadKey JSON setting and the DOTNET_SYSTEM_CONSOLE_USENET6COMPATREADKEY environment variable has been removed.
Previous behavior
Previously, you could request the .NET 6 console key parsing logic via a runtime configuration switch.
New behavior
Starting in .NET 8, you can't request the .NET 6 compatibility mode for Console.ReadKey.
Version introduced
.NET 8 Preview 1
Type of breaking change
This change is a behavioral change.
Reason for change
The compatibility mode was introduced as a safety switch in case the Console.ReadKey implementation rewrite introduced any bugs. Only one bug was reported, and it was fixed in .NET 7, so there's no need to keep the previous implementation anymore.
Recommended action
If the new implementation doesn't work as expected, open a bug at https://github.com/dotnet/runtime/issues so it can be fixed.
Affected APIs
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