Blazor RZ9986 — Component attributes do not support complex content (mixed C# and markup)

[vova-lantsov-dev]

I've found that this issue was already fixed in 0.4.0 Reference 1 Reference 2

But it still present. Blazor 3.0.0-preview4 Visual Studio 2019 16.1.0 preview2 Latest vsix extension installed

Files where issue happened: Button.razor HalfButton.razor

Project repository

I also tried to solve this problem by deleting .vs / bin / obj directories and restarting VS.