Manual tooltips are undefined in faceted, colored and unaggregated charts

[nicolaskruchten]

Preprocessing this spec results in Title not being in the data, and so they end up undefined. This doesn't happen if the Y axis is aggregated, or if the chart isn't colored or faceted.

[jonmmease]

Here's a cleaned up version that removes the inline data and points at the dataset url:

Open the Chart in the Vega Editor