i add any no. of qty to cart and go to cart summary page it refreshed aftersome time and show total of one qty only.
check this video.
I think I have already answered for this here:
https://community.magento.com/t5/Magento-2-x-Programming/Cart-Summary-shows-wrong-total/m-p/447942
Can you share what is showing Database quote table for this quote?
or please clear magento cache and try it incognito mode too. Thanks