reverted code I didn't understand why it working like that

Author: David Nahodyl

src/Database/Query/FMBaseBuilder.php

@@ -167,7 +167,8 @@ public function where($column, $operator = null, $value = null, $boolean = 'and'
 
         $currentFind[$this->getMappedFieldName($column)] = $operator . $value;
 
-        $this->wheres[] = $currentFind;
+        // add the where clause KvP to the last item in the array of wheres
+        $this->wheres[$count > 1 ? $count - 1 : 0] = $currentFind;
 
         return $this;
     }