Heatmap legend is not correctly refreshed after applying filter

[canasdiaz]

@GeorgLink found an error on the dashboard https://chaoss.biterg.io. The bug affects the legend of the heatmap, which is not correctly refreshed.

This is how you can reproduce it:

• click on https://chaoss.biterg.io/goto/b1475c26efeefbae1791dd583c8c7434
• using the dropdown menu on the left I select "Bitergia" and I click on the (-) filter on top to filter out Bitergia
• the legend is not updated (max should be around 1.4K)
• if I hide the legend and click again to display it, the number is refreshed

[alpgarcia]

Probably related to: https://github.com/elastic/kibana/issues/38818

[dlumbrer]

I tested the behavior in a Kibiter 6.1.4 without our modifications and the result is the same as @sanacl showed.

Probably related to: elastic#38818

It seems that the issue is in Kibana

[sduenas]

This error is fixed in OpenSearch 2.7.