Left Align Text Option in Course Presentation/Dialog Card

Greetings!

The function to left-align text in Course Presentation/Dialog Card is not working correctly.  I select the left-align function button and apply it to a paragraph of text but it centers the text instead. Right and center align work as expected.  Here's my example:

https://h5p.org/node/46265

I am using Chrome, on a MacBook Pro and have seen this on both h5p.org and my own Drupal 7 instance.

Being able to left-align paragraphs is great for dialog cards, especially when you're trying to help learners recall concepts or phrases.

Thanks! Peter