I have this dashboard 1 chart
The data comes from an SQL query so it's an array
[{"dayofmonth":20,"totalwh":194},{"dayofmonth":20,"totalwh":170},{"dayofmonth":21,"totalwh":184},{"dayofmonth":22,"totalwh":190},{"dayofmonth":23,"totalwh":180},{"dayofmonth":24,"totalwh":239},{"dayofmonth":25,"totalwh":104},{"dayofmonth":26,"totalwh":112},{"dayofmonth":27,"totalwh":229},{"dayofmonth":28,"totalwh":219},{"dayofmonth":29,"totalwh":174},{"dayofmonth":30,"totalwh":156},{"dayofmonth":31,"totalwh":185},{"dayofmonth":1,"totalwh":174},{"dayofmonth":2,"totalwh":155},{"dayofmonth":3,"totalwh":146},{"dayofmonth":4,"totalwh":217},{"dayofmonth":5,"totalwh":235},{"dayofmonth":6,"totalwh":172},{"dayofmonth":7,"totalwh":198},{"dayofmonth":8,"totalwh":136},{"dayofmonth":9,"totalwh":170},{"dayofmonth":10,"totalwh":217},{"dayofmonth":11,"totalwh":191},{"dayofmonth":12,"totalwh":200},{"dayofmonth":13,"totalwh":272},{"dayofmonth":14,"totalwh":191},{"dayofmonth":14,"totalwh":137},{"dayofmonth":15,"totalwh":136},{"dayofmonth":16,"totalwh":150},{"dayofmonth":17,"totalwh":126},{"dayofmonth":17,"totalwh":111},{"dayofmonth":18,"totalwh":180}]
(Note that "dayofmonth" values sometimes repeat and some days are missing.)
Each bar has a different colour so that I can visually associate this chart with others which plot different values.
Here is the same data plotted in Dashboard 2, using Series: msg.topic
But using Series: key: dayofmonth (and unticking Show legend) gives this
Question: Why did the bars switch to 1px wide?
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ps The clear button is not sufficient for D2, if you change anything you have to ctrl F5 to see the result. Why?