Describe the bug
Rotating the device after editing a field in the editor causes the editor to crash

To Reproduce

1. Create a new Post or Page
2. Make an edit like typing into a paragraph block
3. Rotate the device
   💥 (might need to rotate couple times)

Expected behavior
The editor should adjust to landscape mode.

Screenshots

Smartphone (please complete the following information):

Each of these branches are the current HEAD of develop at the time of opening
gutenberg ed848a0ac49257c1c8162fef09440a36c48a8375
gutenberg-mobile 3b58aa6f5938873345e31cd5f61bcca33b84ec1f

WPAndroid bbbbba48832e641bc568aaf65a19a6b33c62cf40 (pointed to the Gutenberg commits above)

Android

• Device: Pixel 3a
• OS: Android 10
• Version: 29