Bug Info:
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I tried to load a html file which contains a <sup> tag in editorpane and I found that the content inside the sup tag is not properly rendering in RTL orientation.But in LTR orientation its working fine.

I have written the following tag in html file

  4C² = 4!/^(4-2!)*2!

and expected the following output in both LTR/RTL orientation.

4C2 = 4!/(4-2)! * 2!

In LTR orientation i have seen the above specified output but in RTL orientation the output is bit different.
!4C2 = 4!/(4-2)!*2

JDK Info
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java version "1.6.0_02-ea"
Java(TM) SE Runtime Environment (build 1.6.0_02-ea-b02)
Java HotSpot(TM) Client VM (build 1.6.0_02-ea-b02, mixed mode, sharing)

Steps to Reproduce:
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1. Download the attached java file and execute with above specified version.
2. Execute the java file.
${JAVA_HOME}/bin/java JEditorPaneTest sample.html

Please find the attached image file to refer the issue.