Thank you for developing Reading list that safari has!
I was easy to migrate to Firefox.

Reading list works perfectly again on Macos Mojave 10.14.6 and FIrefox 80.

Request!
Font settings. I would like to set Title, URL, ALL/Unread tabs separately for the space-saving.
Favicon size settings. For the space-saving.
Show/Hide settings. Reading List logo, Tabs, Read/Unread counts, Search bar, favicon, preference icon for the space-saving.
Linage settings. for the space-savings as online stores tend to be very large lists.
Larger editable space. I would like to see and edit all texts without scrolling. https://i.imgur.com/QsQO2gR.png
Editable favorite tabs/Icons. For lazy fellows like me. [All] [Unread] [Favorite][Secret]