Click the stage to cycle through the costumes. Click the buttons to change sprite. This is a demonstration of a text rendering bug that cuts of the last line of text, or, if there is a second text frame in the costume, distorts the text. Sprite 1 demonstrates the bug. Sprite 2 demonstrates the easy fix - just add an extra linebreak.
Thanks to @The_CrazyNay for testing and discovering additional solutions to the problem (see the comments).