When you have multiple tabs open and close the browser the Recently closed sidebar remembers the tabs that were open. It seems like Sidewise does not have time to delete them before it close when the browser closes. You need to not store the tabs in the first place if the “Maximum recently closed items remembered” is set to zero. Also is there a way to turn off remembering previous sessions or could you add a configuration checkbox that deletes all user data on exit.
Thanks for the great app
Customer support service by UserEcho