Duplicating a Timeline from the MyBlueprint tab creates a Timeline variable with no actual Timeline which cannot be renamed

Duplicating a Timeline from the MyBlueprint tab (instead of duplicating it in the Graph) creates a Timeline variable with no actual Timeline to edit. It is only possible to Set or Get this variable. It cannot be renamed.

1. Open any project
2. Open any Blueprint
3. Create a Timeline in the Event Graph
4. Select the Timeline in the MyBlueprint tab
5. Right-click > Duplicate
6. Select the new Timeline variable in the MyBlueprint tab
7. Right-click > Rename
8. Give the variable a new name

Results:
The Timeline is not actually duplicated, and instead a variable of the same type is created that cannot be renamed. This is inconsistent with duplicating a Timeline in the Event Graph, which works as expected.

Cannot rename a timeline after duplication