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

[severity:It bothers me. A fix would be nice]
Starting to type explicit interface implementation member. Null ref exception after typing interface name, pressing dot and choosing with keyboard a property name from the dropdown.

System.NullReferenceException : Object reference not set to an instance of an object.
at Microsoft.CodeAnalysis.CSharp.Completion.Providers.CompletionUtilities.GetTargetSelectionSpanForInsertedMember(SyntaxNode caretTarget)
at async Microsoft.CodeAnalysis.Completion.Providers.AbstractMemberInsertingCompletionProvider.RemoveDestinationNodeAsync(<Unknown Parameters>)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at async Microsoft.CodeAnalysis.Completion.Providers.AbstractMemberInsertingCompletionProvider.DetermineNewDocumentAsync(<Unknown Parameters>)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at async Microsoft.CodeAnalysis.Completion.Providers.AbstractMemberInsertingCompletionProvider.GetChangeAsync(<Unknown Parameters>)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at async Microsoft.CodeAnalysis.Extensions.IExtensionManagerExtensions.PerformFunctionAsync[T](<Unknown Parameters>)

Original Comments

Feedback Bot on 7/30/2025, 10:52 AM:

We have directed your feedback to the appropriate engineering team for further evaluation. The team will review the feedback and notify you about the next steps.

Feedback Bot on 8/4/2025, 03:45 PM:

This issue is currently being investigated. Our team will get back to you if either more information is needed, a workaround is available, or the issue is resolved.