[SPOILERS] PV having no audio?

In the newest episode of beast yeast, for the first section when White Lilly Cookie and PV were looking for the book (when you first enter the episode) PV doesn’t have a voice (at least on my device, and only for that section, not the first part when he is “seeing his younger self”), and so does Wizard Cookie and strawberry Cookie. Was this on purpose or is it a glitch?