Hello,
When I use MultiaxisArrangement and PlotLabel at the same time, I see there will be two Plotlabes.
ListLinePlot[{Range[10], Prime[Range[10]]},
MultiaxisArrangement -> All, PlotLabel -> "sfa"]
Looks like a bug, you should report it to Wolfram Support. I tried using FrameLabel instead but no label is displayed.
Okay. Thanks a lot.