/rainbow breaks compound emojis

[robintown]

Steps to reproduce

Send /rainbow 🐻‍❄️

Outcome

What did you expect?

What happened instead?

Operating system

NixOS unstable

Browser information

Firefox 97.0.1

URL for webapp

develop.element.io

Application version

Element version: 2d3757c-react-7b71a9fb6543-js-35a375e3d290 Olm version: 3.2.8

Homeserver

Synapse 1.54.0

Will you send logs?

No

[t3chguy]

Related #9794 (comment)

[EECvision]

Hi @andybalaam @t3chguy @gsouquet, I am an outreachy applicant. I am interested in solving this issue. Can you assign it to me? Thank you

[andybalaam]

@EECvision I assigned it to you. Make sure you un-assign it if you stop working on it.

[EECvision]

Alright, thank you.