Styles dropdown not working

I can't select a writing style from the styles dropdown in either Arc, Chrome, or Firefox.

My styles show up in the dropdown, but when I select one, the UI just flashes and it doesn't stay selected.

This is a big problem for using Spiral because the writing doesn't follow styles. I've also tried referencing the styles by name to see if it can find the style within the workflow, and it doesn't.

It's hard for me to use Spiral because of this. I have fairly specific formatting requirements for social media, and it's too much work when it deviates away from this on its own.