Switch context lost when using div inside th:case

[e-iceman]

Found an apparent issue with the th:case tag and a nested div tag clearing the switch context before it should. I'm using Non Spring Thymeleaf version 3.0.11.

<th:block th:switch="${var}">
	<th:block th:case="'A'">
		<div>AA</div>
	</th:block>
	<th:block th:case="'B'">
		<span>BB</span>
	</th:block>
</th:block>

I get this error:
Caused by: org.thymeleaf.exceptions.TemplateProcessingException: Cannot specify a "{th:case,data-th-case}" attribute in an environment where no switch operator has been defined before.

If the div tag is changed to a span around the AA the error goes away.