MISSING node appears in a valid type declaration

[bhaible]

This file t.go

package main

type ( Alias1 = bool
       Alias2 = int )

func main() {
}

is apparently valid: go run t.go successfully executes it (golang version 1.22.2). But tree-sitter-go 0.23.4 produces this syntax tree:

(source_file
  (package_clause (package_identifier))
  (type_declaration
    (type_alias name: (type_identifier) type: (type_identifier))
    (type_alias name: (type_identifier) type: (type_identifier))
    (MISSING "source_file_token1"))
  (function_declaration name: (identifier) parameters: (parameter_list) body: (block)))

Since the file is valid, I would expect no MISSING node.