After update Facebook IOS SDK generated dialogs we are consistently getting CAPTCHA's

After Facebook IOS SDK update, our app generates a message "A Link in Your Post Might Be Unsafe" and then "Security Check Failed" when our user try to post to Facebook from the app. We never had this before Facebook SDK update. Are there any peculiarities in Facebook SDK update that we should take into account to avoid this situation in future?

Thank you in advance for your help.

Best regards, Awem Games