[Broken Website] Intercom completely freezes when pasting lists

[brawaru]

Prerequisites

• I searched for any existing report about this website issue to avoid opening a duplicate.
• I can reproduce this website issue in a new, unmodified web browser profile with Dark Reader installed as the only extension.

Website Issue Description

When pasting a list without pretext or trailing text, Intercom website completely freezes using Dark Reader.

Website Address

https://app.intercom.com/

Steps To Reproduce

1. Copy a list like this one. Here's some formatting, just to make sure
2. Try pasting it in a chat field or workflow message on Intercom.
3. Tab completely freezes and has to be force closed before it eats all your RAM.

Screenshots

No response

Operating System

Windows 11

Web Browser name and version

Arc 124.0.6367.155 (Official Build) (64-bit) or Microsoft Edge 124.0.2478.80 (Official build) (64-bit)

Dark Reader version

4.9.84

Additional Context

Perhaps it's another conflict with app's script similar to #12435? I dunno how to debug this, everything just freezes and I can't even use DevTools.