Respect "Tooltip sort by metric" in stacked bar charts with Rich Tooltip

What is the problem or goal you're trying to solve or accomplish?

In ECharts Bar charts, the Rich Tooltip option includes a "Tooltip sort by metric" setting (ascending/descending). When the chart is stacked, this setting does not change the order of the values shown in the tooltip, which stay in the series stacking order (ascending in the customer's case). Customers expect the setting to apply in stacked mode too. Today it appears to work only for non-stacked charts.

Use case: Charts with many series (e.g. client volumes as the dimension) need the largest contributors at the top of the tooltip. With the current order, users have to scan a long list to find the top values.

Current behavior:

• Bar chart, stacked, Rich Tooltip enabled, "Tooltip sort by metric" set to descending.

• Tooltip values are still listed in the stacking order, not sorted by value.

How are you solving it currently?

There is no workaround

What is your recommended solution?

Implement de sort by metric feature for staked bar charts