The timeline was displayed incompletely under certain conditions.

### Steps to reproduce

1. Enable "Try out the rich text editor" in "Labs";
2. Go back to the contact list;
3. Press the Home button to return to the main screen;
4. Send a message to this session from another session, make sure the notification banner is displayed at the top of the screen;
5. Click on this banner to enter the conversation.

### Outcome

#### What did you expect?
n/a

#### What happened instead?
The timeline does not automatically scroll to the bottom, but a section above the bottom. If you manually scroll to the bottom, a small part of the text at the bottom will be covered by the editor and cannot be scrolled anymore.
Go back to the contacts list, then re-enter that timeline, and the problem goes away.


### Your phone model

iPhone 7 Plus

### Operating system version

iOS 15.6.1

### Application version

Element iOS 1.9.14

### Homeserver

Synapse 1.74.0

### Will you send logs?

No