Cannot close app after addition of new link

[bovergaauw]

Problem:
After adding a link there's no way of closing the app with the Android Back button.

Steps to reproduce problem:

1. Share a link to LinkHub or create one manually.
2. Click the Back button: LinkHub will return to its main screen.
3. Try to close LinkHub by clicking the Back button one or more times: The app will reload its main screen, but will never close.

Expected behavior:
Clicking Back in step 3 should close LinkHub.

Phone:
Samsung S9 running Android 10