First scenario

1. Create a new content, fill the required fields and save & close.
2. Create a second content, fill the required fields and save & close.
3. Open the SearchTool and launch an empty search.
4. Double-click on the first content created before.
5. The server throws an error : "TypeError: Cannot read property 'data' of undefined"

Alternative scenario

1. Create a new content, fill the required fields and save & close.
2. Create a second content, fill the required fields and save & close.
3. Open the SearchTool and launch an empty search.
4. Delete the first content created before.
5. The server throws an error : "TypeError: Cannot read property 'data' of undefined"

This is due to a bug with the HistoryTool when trying to add an existing entry or remove an entry.