Linebreaks gone after editing a message

Steps to reproduce

1. Send

Line1

Line2 

2. Edit message to:

Line1New

Line2 

What is the current bug behavior?

1. Send message

2. Edit

3. Send

System/Matrix Information

• Distribution / Platform: openSUSE TW
• Qt Version: 5.15.2
• NeoChat version: 1.2
• Quotient version: 0.6.7