Compilation failed: class type required but T found

[steinybot]

Reproduction: https://github.com/steinybot/bug-reports/tree/scalablytyped/rc-tree

project/plugins.sbt:

addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.10.1")
addSbtPlugin("org.scalablytyped.converter" % "sbt-converter" % "1.0.0-beta39")

build.sbt:

scalaVersion := "2.13.8"

enablePlugins(ScalaJSPlugin, ScalablyTypedConverterPlugin)

scalaJSUseMainModuleInitializer := true

Compile / npmDependencies ++= Seq(
  "rc-tree" -> "5.6.6"
)

Running sbt stImport fails with:

[error] ZincCompiler.scala:230 msg.get() [Error] /Users/jason/src/bug-reports/target/streams/_global/stImport/_global/streams/sources/r/rc-tree/src/main/scala/typings/rcTree/interfaceMod.scala:406: class type required but T found [project => bug-reports, ms => 11128]
[error] ZincCompiler.scala:230 msg.get() one error found [project => bug-reports, ms => 11329]
[error] Phase3Compile.scala:147 err Compilation failed: -Xplugin:/Users/jason/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-js/scalajs-compiler_2.13.8/1.10.1/scalajs-compiler_2.13.8-1.10.1.jar, -encoding, utf-8, -feature, -g:notailcalls, -language:implicitConversions, -language:higherKinds, -language:existentials, -bootclasspath, /Users/jason/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala-library/2.13.8/scala-library-2.13.8.jar:/Users/jason/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala-library/2.13.8/scala-library-2.13.8.jar:/Users/jason/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala-library/2.13.8/scala-library-2.13.8.jar, -classpath, /Users/jason/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala-compiler/2.13.8/scala-compiler-2.13.8.jar:/Users/jason/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala-reflect/2.13.8/scala-reflect-2.13.8.jar:/Users/jason/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/jline/jline/3.21.0/jline-3.21.0.jar:/Users/jason/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/net/java/dev/jna/jna/5.9.0/jna-5.9.0.jar:/Users/jason/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-js/scalajs-library_2.13/1.10.1/scalajs-library_2.13-1.10.1.jar:/Users/jason/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-js/scalajs-compiler_2.13.8/1.10.1/scalajs-compiler_2.13.8-1.10.1.jar:/Users/jason/.ivy2/local/org.scalablytyped/rc-virtual-list_sjs1_2.13/3.4.8-23ea56/jars/rc-virtual-list_sjs1_2.13.jar:/Users/jason/.ivy2/local/org.scalablytyped/std_sjs1_2.13/4.3-b346df/jars/std_sjs1_2.13.jar:/Users/jason/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-js/scalajs-dom_sjs1_2.13/2.2.0/scalajs-dom_sjs1_2.13-2.2.0.jar:/Users/jason/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-js/scalajs-library_2.13/1.5.1/scalajs-library_2.13-1.5.1.jar:/Users/jason/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/olvind/scalablytyped-runtime_sjs1_2.13/2.4.2/scalablytyped-runtime_sjs1_2.13-2.4.2.jar [Error] /Users/jason/src/bug-reports/target/streams/_global/stImport/_global/streams/sources/r/rc-tree/src/main/scala/typings/rcTree/interfaceMod.scala:406: class type required but T found [thread => 281, project => bug-reports, ms => 11382, phase => build, id => rc-tree, flavour => NormalFlavour]

That line of interfaceMod.scala looks like:

   /* import warning: RemoveDifficultInheritance.summarizeChanges 
  - Dropped {[ P in keyof std.Record<ChildFieldName, std.Array<rc-tree.rc-tree/es/interface.FieldDataNode<T, ChildFieldName>>> ]:? std.Record<ChildFieldName, std.Array<rc-tree.rc-tree/es/interface.FieldDataNode<T, ChildFieldName>>>[P]} */ @js.native
  trait FieldDataNode[T, ChildFieldName /* <: String */]
    extends StObject
       with BasicDataNode
       with T

[steinybot]

Same thing happens updating antd to 4.22.3 in https://github.com/ScalablyTyped/SlinkyDemos