/shrug gets an arm removed

[paulchen]

Description:

When typing /shrug, the resulting kaomoji is missing an arm.

Steps to reproduce:

1. Create a message using /shrug.

Expected behavior:

The kaomoji being rendered looks as follows: ¯\_(ツ)_/¯

Actual behavior:

The kaomoji is missing an arm: ¯_(ツ)_/¯

When editing the message, the arm is visible.

Server Setup Information:

• Version of Rocket.Chat Server: 5.1.0
• Operating System: Linux
• Deployment Method: Docker image via Systemd (as documented in https://docs.rocket.chat/quick-start/deploying-rocket.chat/rapid-deployment-methods/docker-and-docker-compose/docker-containers/systemd)
• Number of Running Instances: 1
• DB Replicaset Oplog: ?
• NodeJS Version: v14.19.3
• MongoDB Version: 5.0.11 / wiredTiger (oplog Enabled)

Client Setup Information

• Desktop App or Browser Version:
  • Chromium Version 105.0.5195.102 (Offizieller Build) Arch Linux (64-Bit)
  • Firefox 104.0.1 (64-Bit)
• Operating System: Arch Linux

The same behaviour can be observed in the Android app as well.

[stefanandres]

In fact, it seems every single backslash is removed. E.g. \o/ becomes o/ as well.
\\o/ will become \o/

[kuemmi]

Yes, all backslashes are getting removed, see also: #26907