Merge pull request #537 from gzm0/document-splitting-bug

Warn that simple dynamic module splitting is buggy

Author: sjrd

_posts/news/2021-01-12-announcing-scalajs-1.4.0.md

@@ -105,6 +105,8 @@ class MyApp {
 }
 {% endhighlight %}
 
+Addendum: This example is affected by [#4386](https://github.com/scala-js/scala-js/issues/4386), see the issue for a workaround.
+
 The `js.dynamicImport` method has the following signature:
 
 {% highlight scala %}