Steps to reproduce
go to Alfred Preferences: General: Web Search
uncheck google, lucky, images, maps, translate, gmail, drive ( all for google )
uncheck amazon
close Alfred Preference
activate Alfred 5
type 'asdf'
Alfred 5 offers asdf google search and asdf amazon search as first two options
reboot Macintosh
check Alfred Preferences: General: Web Search
selections are still correct where all above are still unselected
type 'asdf'
Alfred 5 still offers asdf google search and asdf amazon search as first two options