Livedata using sourceParameters with cross wiki references is not found

Use case:
Created a class on xwiki.org . https://www.xwiki.org/xwiki/bin/view/Documentation/DevGuide/FrontendResources/Icons/IconMappingClass#Information
I want to display a livetable of this class' objects in some extension documentation. https://extensions.xwiki.org/xwiki/bin/view/Extension/Font%20Awesome%20Icon%20Theme#HIconMapping

In order to do so, I tried to provide a cross wiki reference:
```
liveData id="iconMappings" properties="Iconname, Silkmapping" showPageSizeDropdown="false" sort="Iconname" source="liveTable" sourceParameters="className=xwiki:Documentation.DevGuide.FrontendResources.Icons.IconMappingClass"/liveData
```

This cross wiki reference is not found.

A workaround mleduc found to still get some results is
```
1{{liveData id="iconMappings" properties="Iconname, Silkmapping" showPageSizeDropdown="false" sort="Iconname" source="liveTable" sourceParameters="className=Documentation.DevGuide.FrontendResources.Icons.IconMappingClass&resultPage=xwiki:XWiki.LiveTableResults"}}/liveData
```

However, the escaping of entries with this workaround seems to be off.
____
As a user, I would have expected crossWiki references to work across a farm when defining liveDatas.