New line created with shift-enter in RTE code block is not displayed until typing on that line

[BurnyBoi]

Steps to reproduce

(With the Rich Text Editor lab enabled)

1. Click "Code Block" on a blank compose box to start a new block
2. Type the first line of code
3. Press Shift-Enter to start a new line. Nothing visibly happens
4. Type the second line of code. Observe that now the new line is visibly created and the second line is typed in the correct place.

Outcome

What did you expect?

When pressing Shift-Enter in the code block, the cursor should move down to a new line right away

What happened instead?

New line is not visible until you actually start typing on that line.

(Typed out first line, then pressed Shift-Enter. There is no indication I am now on the second line. Cursor is still incorrectly shown as being on the right of the first line and the code block has not increased in size)

(As soon as I type the "s" in "second line of code", the code block increases in height, the new line is visible, the cursor jumps down to it and types there.)

Operating system

Arch Linux

Browser information

Firefox 106

URL for webapp

develop.element.io

Application version

Element version: bd26775-react-222f8a919dd9-js-cb613457801b Olm version: 3.2.12

Homeserver

matrix.org

Will you send logs?

No