Filter buttons can be hidden behind table headers within Discover

[asmith-elastic]

Kibana version: 8.16

Elasticsearch version: 8.16

Server OS version:

Browser version:

Browser OS version:

Original install method (e.g. download page, yum, from source, etc.):

Describe the bug:

The filter buttons within Discover table can become inaccessible for the top most document, as the layering put's these buttons behind the table headers. This occurs after one starts scrolling through results:

Steps to reproduce:

1. Open a data view within Kibana Discover.
2. Scroll down on the table in a way that hides the first document.
3. Attempt to view the filter buttons on the document that is now appearing at the top of the discover table.

Expected behavior:

The expected behavior is to have the buttons appear in front of the header. This is something that occurs for the very first results in the table as seen in the below screenshot:

[elasticmachine]

Pinging @elastic/appex-sharedux (Team:SharedUX)

[elasticmachine]

Pinging @elastic/kibana-data-discovery (Team:DataDiscovery)

[Dosant]

I reassigned to Discover team, as far as I know, shared-ux doesn't own this component. let us know if we can help

[davismcphee]

This issue is currently blocked by upstream changes in the EUI data grid component. It's not the first time we've heard it though, and there's an issue in the EUI repo for improvements here: elastic/eui#7828.