Decomposition Tree // Bug when Renaming Measures

I have created a Decomposition Tree (Preview) Visual and added a few "Explain by" fields using Power BI Desktop. To help the report user figure out what the "explain by" fields are, I have renamed a few of them - just like we rename fields in a column for a table/matrix. However, the renamed values do not appear when publishing to Power BI service.

Is it a bug or is Decomposition Tree not fully baked?