Version 9.2.5.6073

I would like to request that script validation be limited to the selected text during Format SQL.

This is a duplicate of a Completed feature (Bug) submitted on version 7. https://redgate.uservoice.com/forums/94413-sql-prompt/suggestions/16611622-formatting-of-valid-selected-code-when-there-is-in
I see recent comments on the original request but you may not be addressing since it is marked completed.

To Replicate:

Put 3 lines below in a new Window in SSMS

SOME BAD TEXT
GO
SELECT 1 FROM dbo.Person

Now select All of Line 3 after the GO Statement. Right-click, Format SQL

Should get following error:
"Error inserting semicolons" ...

Script parsing errors:
Line 1 Col: 1 - Incorrect syntax near SOME. ...