Revert "EuiComboBox converts entered text into a custom option on b…

…lur (elastic#1353)"

This reverts commit f7e447e.

CHANGELOG.md

@@ -21,11 +21,13 @@
 - Altered `EuiHeader`'s location of `EuiHeaderBreadcrumbs` based on the new `truncate` ability ([#1346](https://github.com/elastic/eui/pull/1346))
 - Added support for `href` and `target` props in `EuiBasicTable` actions ([#1347](https://github.com/elastic/eui/pull/1347))
 - Added `.eui-textBreakWord` CSS utility class  ([#1349](https://github.com/elastic/eui/pull/1349))
-- Added support for `EuiComboBox` converting entered text into a custom option when the user removes focus, e.g. by tabbing to another element. This prevents the `EuiComboBox` from being mistaken for an `EuiInputText`. ([#1353](https://github.com/elastic/eui/pull/1353))
 
 **Bug fixes**
 
 - Fixed word-breaks in table cells for Firefox ([#1349](https://github.com/elastic/eui/pull/1349))
+
+**Bug fixes**
+
 - Fixed EUI when used in an environment lacking ES Modules support, e.g. Jest ([#1358](https://github.com/elastic/eui/pull/1358))
 
 ## [`5.4.0`](https://github.com/elastic/eui/tree/v5.4.0)

src/components/combo_box/combo_box.js

@@ -258,12 +258,6 @@ export class EuiComboBox extends Component {
       this.closeList();
     }
 
-    // If the user tabs away or changes focus to another element, take whatever input they've
-    // typed and convert it into a pill, to prevent the combo box from looking like a text input.
-    if (!this.hasActiveOption()) {
-      this.addCustomOption();
-    }
-
     if (this.props.onBlur) {
       this.props.onBlur(e);
     }