Epubcheck 5.2.1 java.lang.IllegalArgumentException for the same EncryptedData twice #1607

java.lang.IllegalArgumentException: Multiple entries with same key: https://b73edd61-1c05-4a6b-ae09-fcc19ddf1940.epubcheck.w3c.org/OEBPS/font/AdobeFangsongStd-Regular.otf=com.adobe.epubcheck.ocf.encryption.IDPFFontManglingFilter@6e41ba2 and https://b73edd61-1c05-4a6b-ae09-fcc19ddf1940.epubcheck.w3c.org/OEBPS/font/AdobeFangsongStd-Regular.otf=com.adobe.epubcheck.ocf.encryption.IDPFFontManglingFilter@dfa9893
	at com.google.common.collect.ImmutableMap.conflictException(ImmutableMap.java:378)
	at com.google.common.collect.ImmutableMap.checkNoConflict(ImmutableMap.java:372)
	at com.google.common.collect.RegularImmutableMap.checkNoConflictInKeyBucket(RegularImmutableMap.java:246)
	at com.google.common.collect.RegularImmutableMap.fromEntryArrayCheckingBucketOverflow(RegularImmutableMap.java:133)
	at com.google.common.collect.RegularImmutableMap.fromEntryArray(RegularImmutableMap.java:95)
	at com.google.common.collect.ImmutableMap$Builder.build(ImmutableMap.java:572)
	at com.google.common.collect.ImmutableMap$Builder.buildOrThrow(ImmutableMap.java:600)
	at com.google.common.collect.ImmutableMap$Builder.build(ImmutableMap.java:587)
	at com.adobe.epubcheck.ocf.OCFContainer.<init>(OCFContainer.java:77)
	at com.adobe.epubcheck.ocf.OCFContainer$Builder.build(OCFContainer.java:56)
	at com.adobe.epubcheck.ocf.OCFCheckerState.getContainer(OCFCheckerState.java:157)
	at com.adobe.epubcheck.ocf.OCFChecker.checkOtherMetaFiles(OCFChecker.java:492)
	at com.adobe.epubcheck.ocf.OCFChecker.check(OCFChecker.java:159)
	at com.adobe.epubcheck.api.EpubCheck.doValidate(EpubCheck.java:218)
	at com.adobe.epubcheck.tool.EpubChecker.validateFile(EpubChecker.java:253)
	at com.adobe.epubcheck.tool.EpubChecker.processFile(EpubChecker.java:328)
	at com.adobe.epubcheck.tool.EpubChecker.run(EpubChecker.java:151)
	at com.adobe.epubcheck.tool.Checker.main(Checker.java:31)

<encryption xmlns="urn:oasis:names:tc:opendocument:xmlns:container" xmlns:enc="http://www.w3.org/2001/04/xmlenc#">
	<enc:EncryptedData>
		<enc:EncryptionMethod Algorithm="http://www.idpf.org/2008/embedding" />
		<enc:CipherData>
			<enc:CipherReference URI="OEBPS/font/AdobeFangsongStd-Regular.otf" />
		</enc:CipherData>
	</enc:EncryptedData>
	<enc:EncryptedData>
		<enc:EncryptionMethod Algorithm="http://www.idpf.org/2008/embedding" />
		<enc:CipherData>
			<enc:CipherReference URI="OEBPS/font/AdobeFangsongStd-Regular.otf" />
		</enc:CipherData>
	</enc:EncryptedData>
</encryption>