Something Is Wrong With Yii\bootstrap\carousel

Hello! I’ve noticed that arrows of the carousel are very small and are not centered vertically.

Just add



        'items' => [

            '<img src="">',

            '<img src="">',




to any view of the basic application to reproduce. Here is the demo.

This differs from the official demo for some reason.

Is this an issue of bootstrap dependency or yii2? Or maybe this is not an issue?

Moved From Bug Discussion to Extensions.