Error defining dynamic title on line & stacked column chart with same measure

I define a very simple use case;

• the model is local and the tables are created with "enter data"
• the measure's datatype is text (it is a simple string)
• I'm working on desktop, no pinning to dashboard
• I'm using only standard visuals: "line and stacked column chart"
• dynamic title apply correctly when I apply one measure to "Column y-axis" and a different measure to "Line y-Axis"
• dynamic title abort with a run-time error when I apply the same measure to "Column y-axis" and "Line y-Axis"

Thanks

best regards

Luigi