Yes – this is an issue when you want to plot the raw data with the dates.
We were doing an offset to look correct, but thought about an even better way. Basically, you take the average of the date, so both the Row for grouping and the Value are set to the same date column.
When you extract that result, this can be used now for the x-axis. We updated the example file to use this approach too. So you can take a look at the details there. Does this work for you?