Fixes #4812

extensions/debug/LogTarget.php

@@ -139,7 +139,7 @@ class LogTarget extends Target
         $summary = [
             'tag' => $this->tag,
             'url' => $request->getAbsoluteUrl(),
-            'ajax' => $request->getIsAjax(),
+            'ajax' => (int)$request->getIsAjax(),
             'method' => $request->getMethod(),
             'ip' => $request->getUserIP(),
             'time' => time(),

extensions/debug/components/search/matchers/SameAs.php

@@ -27,7 +27,7 @@ class SameAs extends Base
     public function match($value)
     {
         if ($this->partial) {
-            return mb_stripos($value, $this->baseValue, \Yii::$app->charset) !== false;
+            return mb_stripos($value, $this->baseValue, 0, \Yii::$app->charset) !== false;
         } else {
             return strcmp(mb_strtoupper($this->baseValue, \Yii::$app->charset), mb_strtoupper($value, \Yii::$app->charset)) === 0;
         }