JSON content shows a blank window?

[resolutewl-machine-user]

I posted on Stack Overflow what my issue is:

https://stackoverflow.com/questions/69282321/json-content-shows-a-blank-window-for-tiptap-vuetify

Background
I'm using tiptap-vuetify to implement a message/chat UI where users see an editable instance for creating new messages as well as several uneditable instances (one for each already-sent message in the thread the user is viewing).

I have the editable instance output data in JSON format, which I store in my database in a JSONB field.

Problem
When I load the JSON for sent messages from the database, only plaintext messages show up; if I applied any kind of styling (bold, italics, lists, etc.), nothing at all shows up.