Blazor. I can't insert html-code In #if DEBUG, but it worked in older versions

[Andrey-2021]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

Blazor project.
I have updated Visual Studio, now - Microsoft Visual Studio Community 2022 - Current 17.11.
Before I have 17.10
In old version the code in ShowMyError.razor-component is work:

but after update its not work, error:
CS0103 div does not exist in the current context

Expected Behavior

The ability to insert html-code in #if DEBUG section

Steps To Reproduce

1. create AnyName.razor component
2. insert section in component:
   #if DEBUG
   #endif
3. try insert div or span in #if DEBUG section

Exceptions (if any)

No response

.NET Version

8.0.400

Anything else?

No response

[davidwengier]

I believe the explanation for this is #10737 (comment)

[333fred]

Duplicate of #10737.