@neerja, I think we have explained the situation several times already. The problem is when a user, who is not logged in, tries to log in with a different social account to the one he had used before to sign up. The fact that you currently allow for two social accounts to be merged when the user is already logged in is irrelevant, as it does not solve the issue we have explained.
A user with several social accounts (the vast majority) will not always remember which social account he used to sign up. It is not a corner case, it happens very often.
You mentioned a few posts back that your engineers decided not to implement this due to security reasons. I think it would be great if Bubble let its customers decide what has security implications and what not, because what you might think is dangerous, it might not be for some of your customers. You could have a checkbox to allow social accounts auto-merging at login, instead of not enable it at all.