1. New a workbook and fill with data, then make a Scatter plot.

2. New another workbook, insert the graph to any cell as linked graph.

3. Active the original book, add the graph as floating graph.

4. Select the floating graph and press Delete key to delete it.
   ==> The linked graph still shows.

5. Double-click to open it then close.

6. Double-click to open it again.
   ==> Crashes.

Fixed in Origin 2025b.