I just saw today when I logged on to AFF that there was a warning message for using the old theme. And I was just curious if anyone has encountered any problems when using the old theme? I haven't encountered any.. YET, but I've been using the old theme ever since I had my account in 2013 and haven't had any problems other than just being signed out whenever I log onto a different device but I dont really see that as a problem.

This is the warning message that is shown when using the old theme if you guys haven't seen it

WARNING! Use at your own risk! This is no longer a supported theme. I've been able to fix any conflicts that arose between the new and old themes over the years but it has recently been discovered that there are un-fixable security issues with the old theme that may put your account content and information at risk and cannot be easily resolved. To reduce the possibility of exploiting these security issues, this theme is only available to older accounts to prevent would-be attackers on new accounts from taking advantage of these problems but it is no guarantee of safety. Errors that surface between the old theme and the newer themes as a result of conflicts with new changes will also no longer be supported. If such conflicts arise, the conflicting feature will be removed in the old theme to prevent server errors that reduce the performance of the site for everyone (new and old theme users alike). By using this theme, you understand and accept all of the risks as stated above.