Bug Description

If an EPUB does not have a cover, the cover of the book closest to the book will disappear after being deleted from the bookshelf, and after refreshing, either the cover will appear or the deleted book without a cover will be opened. It cannot be closed by returning, and you must click the ✗ in the upper right corner of the interface.

Example:

In DarkMode, when scrollbar are displayed (for example on Companies page, with enough companies in the list), we see a blank square in the bottom right corner
[screenshot]

Expected behavior

A clear and concise description of what the expected behavior is.

Example:

The blank square should be transparent (invisible)

Technical inputs

Operating System:aosp12

Readest Version:0.9.38

Example:

Operating System: macOS 14.3.1
Readest Version: 0.9.0
We are displaying custom scrollbars that disappear when the user is not scrolling. See ScrollWrapper.
Probably fixable with CSS