pagerelations macro displays an error in inline edit mode

Failed to execute the [html] macro. Cause: [When using the HTML macro inline, you can only use inline HTML content. Block HTML content (such as tables) cannot be displayed. Try leaving an empty line before and after the HTML macro.]. Click on this message for details.">WebHome' size='1' type='text'/&gt;&#123;&#123;/html}}</a>
</span><span class="separator">[</span><a href="/xwiki/wiki/testrelations/view/PageRelations/Code/UI?xaction=delete&amp;page=Meeting.Test meeting one&amp;page-relation=%26%2334%3Binput%26%2334%3B%7D%20%29%27%20class%3D%27suggested%27%20id%3D%27PageRelations.Code.PageRelationClass_0_page%27%20name%3D%27PageRelations.Code.PageRelationClass_0_page%27%20value%3D%27Sandbox.WebHome%27%20size%3D%271%27%20type%3D%27text%27%2F%3E%7B%7B%2Fhtml%7D%7D&amp;direct=false&amp;xredirect=%2Fxwiki%2Fwiki%2Ftestrelations%2Fview%2FMeeting%2FTest%2520meeting%2520one%23xPageRelations" class="page-relation-tool page-relation-delete" title="Delete this relation from the page">X</a><span class="separator">]</span></span>
</li>
<li class="page-relation-tool page-relation-add"><a href="/xwiki/wiki/testrelations/view/PageRelations/Code/UI?showRelationAddForm=true&amp;page=Meeting.Test meeting one#xPageRelations" title="Add relation">[+]</a></div></li>
</ul>
</div>
{{/html}}

{{include reference='Meeting.Macros' /}}

{{velocity}}

{{pagerelations showTitles='false' /}}

{{html wiki='true'}}
#set($discard = $xwiki.ssx.use('AppWithinMinutes.ClassSheetGenerator'))
...