Profile.get_followers() is not getting 100% of followers

Describe the bug After trying to fetch all the followers of accounts, I’ve seen it always lacks ~1 follower per each 200 followers. I’m not sure what is the problem cause it’s not showing any kind of exception when querying the data. I try looking manually on the IG web interface at the followers that aren’t being fetched and they are:

1. Public
2. Some are being followed by the account in question
3. Some have been followers for more than 1 month

To Reproduce

username = 'username'
L = instaloader.Instaloader()
try:
    L.load_session_from_file(username)
except instaloader.BadCredentialsException:
    L.login(username, 'credentiales-password')
    L.save_session_to_file()
except instaloader.TwoFactorAuthRequiredException:
    L.two_factor_login()
    L.save_session_to_file()
pipaslastres = instaloader.Profile.from_username(L.context, 'pipaslastres')
pipaslastres_cls = [f_cls for f_cls in pipaslastres.get_followers()]
pipaslastres_followers = [{'a': 'pipaslastres', 'f': f.username} for f in pipaslastres_cls]

len(pipaslastres_followers) # 1469
# real followers count according to IG interface = 1474

Expected behavior Download 100% of followers

Instaloader version 4.6.1

[Thammus]

I have added my date of birth in my account settings of Instagram. When executing your code snippet, all of the reported 1666 followers get fetched by Profile.get_followers(). Doing the same procedure with an Instagram account that is not age-verified, only 1646 followers get fetched.

L = instaloader.Instaloader()
L.load_session_from_file('thammus')

pipaslastres = instaloader.Profile.from_username(L.context, 'pipaslastres')
pipaslastres_cls = [f_cls for f_cls in pipaslastres.get_followers()]
pipaslastres_followers = [{'a': 'pipaslastres', 'f': f.username} for f in pipaslastres_cls]

pipaslastres.followers      # output: 1666
len(pipaslastres_followers) # output: 1666

Not age-verified account:

pipaslastres.followers      # output: 1666
len(pipaslastres_followers) # output: 1646

[Thammus]

Would you mind sharing your new observations? Do the numbers match?