In some cases, using copy/paste is not easy.

Let's take a use case:
- Drop an Accordion
- Delete the AnchorPanes created in the TitledPanes
- In the first TitledPane, drop a ScrollPane, then a GridPane in it
Now, one want to copy/paste the content of the first TitledPane in the second TitledPane :
- Select the ScrollPane from the first TitledPane, the Copy
- Select the second TitledPane, then Paste : it is not possible (Paste dimmed). This appear as a bug.

Investigating this, I've found one need to isolate the second TitledPane to be able to Paste in it. This behavior is not obvious at all...