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- 1Password field length limit blamed for Vanguard login failure●<input type="password" maxlength="20"> prevents me from logging into Vanguard
An engineer has described being locked out of his Vanguard brokerage account because the login form caps password entry at 20 characters, silently truncating longer passwords. Writing in a widely shared blog post, he argues that setting maxlength on password inputs is harmful, since users with longer passwords cannot sign in and receive no clear explanation of why authentication fails.