Disappearing angle-bracketed text between double quotes in a sent message

#### Describe the bug
For example when a message containing `""` is sent, the `foo` and angle brackets `<>` are hidden, leaving only `""`.

#### To Reproduce
Steps to reproduce the behavior:
1. Go to any room or DM
2. Send a message such as `foo "" baz ""`
3. Tap back to the main menu, then back to the same room or DM
4. The message you just sent now reads `foo "" bar "" qux`

#### Expected behavior
The message should read `foo "" baz ""`

#### Screenshots
If applicable, add screenshots to help explain your problem.

#### Smartphone (please complete the following information):
- Device: Google Pixel 3
- OS: Android 11

#### Additional context
- App version and store: 1.1.7 - F-Droid
- Homeserver: matrix.org