Auto Cancel Saved Searches
When implementing this new feature, one still has to either tick auto-cancel saved search or put a setting in the domains.ini file to enable this. I would recommend a future update always enabling auto-cancel saved search if using all unread and all flagged search folders as otherwise this will cause a lot of problems for new users who don't realise that they have to tick this setting.
Thank you for sharing your idea with us to enable the option to auto cancel saved searched by default. It will be considered for future versions.