Email Notification for User Mention broken when specific characters are in the page body

Error: [com.ctc.wstx.exc.WstxLazyException] Unexpected character '<' (code 60) excepted space, or '>' or "/>" at [row,col {unknown-source}]: [1,327]

2020-05-04 17:08:30,488 ERROR [http-nio2-8090-exec-67] [content.render.xhtml.DefaultRenderer] renderWithoutMetrics Error rendering content for view: The XML content could not be parsed. There is a problem at line 1, column 383. Parser message: Unexpected character '<' (code 60) excepted space, or '>' or "/>"
 at [row,col {unknown-source}]: [1,383]
 -- referer: <Confluence Base URL>/pages/resumedraft.action?draftId=579891886&draftShareId=223a2089-01a0-4e95-b56a-042d59d219f5& | url: /rest/api/content/<pageID> | traceId: a0bc99d8a8b0a1e5 | userName: <username>
com.atlassian.confluence.content.render.xhtml.XhtmlParsingException: The XML content could not be parsed. There is a problem at line 1, column 383. Parser message: Unexpected character &#39;&lt;&#39; (code 60) excepted space, or &#39;&gt;&#39; or &quot;/&gt;&quot;
 at [row,col {unknown-source}]: [1,383]
	at com.atlassian.confluence.content.render.xhtml.StaxUtils.convertToXhtmlException(StaxUtils.java:433)
	at com.atlassian.confluence.content.render.xhtml.storage.macro.inlinebody.InlineBodyMacroFixingTransformer.transform(InlineBodyMacroFixingTransformer.java:114)
	at com.atlassian.confluence.content.render.xhtml.TransformerChain.transform(TransformerChain.java:33)
	at com.atlassian.confluence.content.render.xhtml.TransformerChain.transform(TransformerChain.java:33)
	at com.atlassian.confluence.content.render.xhtml.PluggableTransformerChain.transform(PluggableTransformerChain.java:39)
	at com.atlassian.confluence.content.render.xhtml.DefaultRenderer.renderWithoutMetrics(DefaultRenderer.java:189)
	at com.atlassian.confluence.content.render.xhtml.DefaultRenderer.renderWithResult(DefaultRenderer.java:150)
	at com.atlassian.confluence.content.render.xhtml.DefaultRenderer.render(DefaultRenderer.java:134)
	at com.atlassian.confluence.content.render.xhtml.DeviceTypeAwareRenderer.render(DeviceTypeAwareRenderer.java:55)
	at jdk.internal.reflect.GeneratedMethodAccessor1335.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.base/java.lang.reflect.Method.invoke(Unknown Source)
	at com.atlassian.plugin.util.ContextClassLoaderSettingInvocationHandler.invoke(ContextClassLoaderSettingInvocationHandler.java:26)
(...)
	at com.sun.proxy.$Proxy150.saveContentEntity(Unknown Source)
	at com.atlassian.confluence.content.apisupport.ContentCreator.saveNewVersion(ContentCreator.java:507)
	at com.atlassian.confluence.content.apisupport.ContentCreator.update(ContentCreator.java:554)
	at com.atlassian.confluence.api.impl.service.content.typebinding.PageContentTypeApiSupport.update(PageContentTypeApiSupport.java:219)
	at com.atlassian.confluence.api.impl.service.content.typebinding.PageContentTypeApiSupport.update(PageContentTypeApiSupport.java:47)
	at com.atlassian.confluence.api.impl.service.content.ContentServiceImpl.updateUsingApiSupport(ContentServiceImpl.java:127)
	at com.atlassian.confluence.api.impl.service.content.ContentServiceImpl.update(ContentServiceImpl.java:165)
(...)
	at com.sun.proxy.$Proxy220.update(Unknown Source)
	at com.atlassian.confluence.api.impl.service.content.draft.SharedContentDraftServiceImpl.updateContent(SharedContentDraftServiceImpl.java:235)
	at com.atlassian.confluence.api.impl.service.content.draft.SharedContentDraftServiceImpl.publishEditDraft(SharedContentDraftServiceImpl.java:163)
	at com.atlassian.confluence.api.impl.service.content.draft.ContentDraftServiceImpl.publishEditDraft(ContentDraftServiceImpl.java:40)
	at jdk.internal.reflect.GeneratedMethodAccessor2596.invoke(Unknown Source)
(...)
	at com.sun.proxy.$Proxy226.publishEditDraft(Unknown Source)
	at jdk.internal.reflect.GeneratedMethodAccessor2596.invoke(Unknown Source)
(...)
	at java.base/java.lang.Thread.run(Unknown Source)
Caused by: com.ctc.wstx.exc.WstxUnexpectedCharException: Unexpected character '<' (code 60) excepted space, or '>' or "/>"
 at [row,col {unknown-source}]: [1,383]
	at com.ctc.wstx.sr.StreamScanner.throwUnexpectedChar(StreamScanner.java:648)
	at com.ctc.wstx.sr.BasicStreamReader.handleNsAttrs(BasicStreamReader.java:2965)
	at com.ctc.wstx.sr.BasicStreamReader.handleStartElem(BasicStreamReader.java:2936)
	at com.ctc.wstx.sr.BasicStreamReader.nextFromTree(BasicStreamReader.java:2848)
	at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1019)
	at com.ctc.wstx.evt.WstxEventReader.peek(WstxEventReader.java:306)
	at com.ctc.wstx.evt.FilteredEventReader.peek(FilteredEventReader.java:120)
	at com.ctc.wstx.evt.FilteredEventReader.hasNext(FilteredEventReader.java:70)
	at com.atlassian.confluence.content.render.xhtml.XmlFragmentBodyEventReader.hasNext(XmlFragmentBodyEventReader.java:33)
	at com.atlassian.confluence.content.render.xhtml.ResettableXmlEventReader.hasNext(ResettableXmlEventReader.java:48)
	at com.atlassian.confluence.content.render.xhtml.storage.macro.inlinebody.InlineBodyMacroFixingTransformer.transform(InlineBodyMacroFixingTransformer.java:84)
	... 456 more