Show downloaded chapters even if them were deleted from the source

[Horodep]

Describe your suggested feature

It's not rare case for me when chapter is already deleted from the source (for example simulcast releases), but it is still not deleted locally. For example: From first screenshot we can see that there are 3 "unread" chapters, but 11 are marked as "downloaded". And the only way to read them from them app is to move them from downloads to local.

I'd appreciate the ability to read downloaded chapters from the original title page.

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 or closed issue.
• [X] I have written a short but informative title.
• [X] I have updated the app to version 0.16.3.
• [X] I will fill out all of the requested information in this form.

[snowekim]

I have the same problem with some extensions which are absolete and no longer available for download. All the content I downloaded from said sources shows in my bookmarks but it's not accessible even though the content is stored locally.