[Backport 2.15] [Discover] Allow the last column of a table wider than the window to show up properly

changelogs/fragments/7058.yml

@@ -0,0 +1,2 @@
+fix:
+- [Discover] Allow the last column of a table wider than the window to show up properly ([#7058](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/7058))

src/plugins/discover/public/application/components/default_discover_table/default_discover_table.tsx

@@ -192,14 +192,11 @@ const DefaultDiscoverTableUI = ({
            *   1) prevent columns from changing size when more rows are added, and
            *   2) speed of rendering time of subsequently added rows.
            *
-           * First cell is skipped because it has a dimention set already, and the last cell is skipped to allow it to
-           * grow as much as the table needs.
+           * First cell is skipped because it has a fixed dimension set already.
            */
-          tableElement
-            .querySelectorAll('thead > tr > th:not(:first-child):not(:last-child)')
-            .forEach((th) => {
-              (th as HTMLTableCellElement).style.width = th.getBoundingClientRect().width + 'px';
-            });
+          tableElement.querySelectorAll('thead > tr > th:not(:first-child)').forEach((th) => {
+            (th as HTMLTableCellElement).style.width = th.getBoundingClientRect().width + 'px';
+          });
 
           tableElement.style.tableLayout = 'fixed';
         }