I believe there is a bug in data handling for a scatter plot (points diagram), when there are empty or pseudo empty cells in the data range: The diagram pretends to be a points diagram, and the data ranges are correctly defined. Nevertheless, the diagram does not show the X data on the horizontal axis, but their index. This should not happen, because it can lead to severely wrong conclusions! This came up in teaching. (The data in the file have been downloaded from a public website and thus are neither mine nor confidential.)

I would appreciate a fix.