[BUG] [2.0] Firefox: First Mermaid diagram won't load

[fry69]

Description

When the last selected chat (which gets loaded upon window/browser load/reload) contains a Mermaid diagram, it won't load in Firefox (tested with current stable/130 and nightly/132).

This seems to be a Firefox-only problem/bug, Chrome loads the diagram without problems upon forced refresh.

Screenshots

This shows up in Firefox when the diagram fails upon first load ->

This shows up when switching to a different chat (which also contains a diagram, that works fine) and then switching back to the original first chat with the crash ->

(this means switching between chats does not let the diagram render, the problem persists)

Notes

Everything works fine upon reload in Firefox if the last selected chat does not contain a Mermaid diagram.

The Developer Console does not seem to contain relevant information.

This was tested locally with npm run dev against the current big-agi-2 branch.

Device and browser

Firefox stable/nightly on M1 Mac