Back button exits app when pressed after searching for an author in certain cases

[catt0s]

Steps to reproduce

1. Enter a manga in your library from the library tab
2. Tap on author name
3. Search author from given menu
4. Press back on navigation bar OR continue to an author and press back on navigation bar without pressing on any manga

Expected behavior

The back button in other cases (including if you enter a manga page and exit it with back) will return you to the Library tab.

Actual behavior

Instead, the back button will exit the app.

Crash logs

No response

Neko version

2.16.2

Android version

Android 10

Device

Galaxy S9

Other details

No response

Acknowledgements

• [X] I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open issue.
• [X] I have written a short but informative title.
• [X] I have updated the app to the newest version Latest.
• [X] I have filled out all of the requested information in this form.