Return or Paste erase the whole writing before

### Steps to reproduce

Try to go to next line or paste something from the clipboard.

### Outcome

Erase the whole writing before, happens since release 1.5.4

### Your phone model

Cat S61

### Operating system version

Android 9

### Application version and app store

1.5.4

### Homeserver

matrix.org

### Will you send logs?

Yes

### Are you willing to provide a PR?

Yes