Format Document (^K^D) deletes needed line continuation underscores in VB.NET

[vsfeedback]

This issue has been moved from a ticket on Developer Community.

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[severity:It's more difficult to complete my work] [regression]
Whenever I press ^K^D to format a VB.NET code behind file in a web application, it removes many needed continuation underscore characters and breaks the application so it will no longer compile.

Example:

Dim ErrMsg As String = "Header line is empty!\n" _
                                      & "The first line of the file must contain header field names..."

Becomes:

Dim ErrMsg As String = "Header line is empty!\n" 
                                      & "The first line of the file must contain header field names..."

Removing the continuation character prevents it from compiling.

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Original Comments

Feedback Bot on 8/23/2023, 09:39 PM:

(private comment, text removed)

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Original Solutions

(no solutions)

[frontier777]

I have the same issue. And the suggestion that I have read elsewhere, to put an apostrophe (comment) at the end of the line, while it does preserve the underscores, it also breaks the old compiler.

[sharwell]

I can't reproduce this while editing a VB document, and I also can't reproduce it in unit tests.

[CyrusNajmabadi]

Closing out as not repro.