Exception when adding tag after the last row in the feature file

[alexandrafung]

Steps to reproduce:

Given this feature file:

Feature: Calculator
	Simple calculator for adding two numbers

@mytag
Scenario: Add two numbers
	Given the first number is 50
	And the second number is 70
	When the two numbers are added
	Then the result should be 120

Type an @ character after the last row:

Feature: Calculator
	Simple calculator for adding two numbers

@mytag
Scenario: Add two numbers
	Given the first number is 50
	And the second number is 70
	When the two numbers are added
	Then the result should be 120

@

com.jetbrains.rdclient.util.BackendException: Incremental reparse cannot step past the end

--- EXCEPTION #1/3 [AssertionException]
Message = “cannot step past the end”
ExceptionPath = Root.InnerException.InnerException
ClassName = JetBrains.Diagnostics.Assertion+AssertionException
HResult = COR_E_EXCEPTION=80131500
Source = JetBrains.Lifetimes
StackTraceString = “
at JetBrains.Diagnostics.Assertion.Fail(String message)
at JetBrains.ReSharper.Psi.TreeBuilder.PsiBuilder.AdvanceLexer()
at ReSharperPlugin.SpecflowRiderPlugin.Psi.GherkinParser.ParseScenario(PsiBuilder builder) in C:\Users\alefu\Work\resharper-specflow\src\dotnet\ReSharperPlugin.SpecflowRiderPlugin\Psi\GherkinParser.cs:line 200
at ReSharperPlugin.SpecflowRiderPlugin.Psi.GherkinParser.ParseFeatureElements(PsiBuilder builder) in C:\Users\alefu\Work\resharper-specflow\src\dotnet\ReSharperPlugin.SpecflowRiderPlugin\Psi\GherkinParser.cs:line 159
at ReSharperPlugin.SpecflowRiderPlugin.Psi.GherkinParser.ParseFeature(PsiBuilder builder) in C:\Users\alefu\Work\resharper-specflow\src\dotnet\ReSharperPlugin.SpecflowRiderPlugin\Psi\GherkinParser.cs:line 132
at ReSharperPlugin.SpecflowRiderPlugin.Psi.GherkinParser.ParseFile() in C:\Users\alefu\Work\resharper-specflow\src\dotnet\ReSharperPlugin.SpecflowRiderPlugin\Psi\GherkinParser.cs:line 51
at JetBrains.ReSharper.Psi.LanguageService.ParseFile(ILexer lexer, IPsiSourceFile sourceFile)
at JetBrains.ReSharper.Psi.Files.CachedPsiFile.GetIncrementalReparseResult(TokenBuffer oldTokenBuffer, IBuffer newBuffer, ISecondaryRangeTranslator secondaryRangeTranslator, TextRange originalRange, Int32 insertedTextLength, IDocument document)
”