using declaration is not parsed correctly wants ";", using statement (block form) works fine.

[johngardner58work]

Compiler version: '4.8.0-7.23558.1 (e091728)'. Language version: 12.0.
The following does not work in donet interactive which uses Roslyn

if (...) // **does not work**
{ 
   using FileStream f = new FileStream(@"C:\users\jaredpar\using.md");
   // statements
}

// Equivalent to (but not in Rosyln)  this form works **fine** 
if (...) 
{ 
   using (FileStream f = new FileStream(@"C:\users\jaredpar\using.md")) 
   {
    // statements
   }
}

Expected Behavior: using declaration form should compile the same as the block form

Actual Behavior:
Error: (39,22): error CS1002: ; expected
(53,46): error CS1525: Invalid expression term ')'