ENGCOM-2509: [Backport] Act better on existing input focus instead of removing it #17086

 - Merge Pull Request #17086 from mageprince/magento2:2.1-develop-PR-port-13989
 - Merged commits:
   1. 90f884f

Author: magento-engcom-team

app/code/Magento/Search/view/frontend/web/form-mini.js

@@ -89,7 +89,9 @@ define([
                 }, this), 250);
             }, this));
 
-            this.element.trigger('blur');
+            if (this.element.get(0) === document.activeElement) {
+                this.setActiveState(true);
+            }
 
             this.element.on('focus', this.setActiveState.bind(this, true));
             this.element.on('keydown', this._onKeyDown);