Closing CDATA tag throws exception

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With lsp4xml 0.5.0 from master, given

<script>
   <![CDATA[
      <message>Foo</message>
   ]]
</script>

when you type the closing bracket on L4, an exception is thrown:

Message: Internal error: java.lang.ClassCastException: org.eclipse.lsp4xml.dom.DOMCDATASection cannot be cast to org.eclipse.lsp4xml.dom.DOMElement
java.util.concurrent.CompletionException: java.lang.ClassCastException: org.eclipse.lsp4xml.dom.DOMCDATASection cannot be cast to org.eclipse.lsp4xml.dom.DOMElement
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:273)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:280)
	at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:604)
	at java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:577)
	at java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:443)
	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
	at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
Caused by: java.lang.ClassCastException: org.eclipse.lsp4xml.dom.DOMCDATASection cannot be cast to org.eclipse.lsp4xml.dom.DOMElement
	at org.eclipse.lsp4xml.services.XMLCompletions.doTagComplete(XMLCompletions.java:341)
	at org.eclipse.lsp4xml.services.XMLLanguageService.doTagComplete(XMLLanguageService.java:193)
	at org.eclipse.lsp4xml.services.XMLLanguageService.doAutoClose(XMLLanguageService.java:203)
	at org.eclipse.lsp4xml.XMLLanguageServer.lambda$closeTag$1(XMLLanguageServer.java:211)
	at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:602)
	... 6 more

There's no such error in lsp4xml 0.4.0