History diff can miss showing the diff for a property

Reproduction steps:

• Go in XWiki.SearchApplication
• Open the class editor
• Remove the engine field (of type String) and create a new engine field of type Static list and save the changes
• Check the history between the original version provided by the extension and the latest version
• Go in administration -> Extension -> Look for "Search application" in installed extension and compute changes
• Check the diff displayed in the changes tab

Expected result:

• The diffs should be identical

Obtained result:

See screenshot showing that the "type" property change is displayed in the EM "changes" diff but not in the history diff: