The ability to login is prevented in IE and FF by a jquery error. It prevents the "log in" button from being clicked after you have entered your account information on the login popup box.
I have not been able to turn this on or off, except by changing browsers.
What I have tried:
Changing Styles - No Effect
Clean Upgrade to 12.1 - No Effect
Enabling & Disabling Countless Options - No Effect
Removing all custom JS from Admin->Look & Feel->Customization - No Effect
Disabled Minify and Optimization Functionality - No Effect
Disabled Cloudflare - No Effect
I have not modified any JS. A clean upgrade confirms this.
I really hope this can be looked at quickly. Users not being able to log in is a serious downer.
See my screenshots for FB Error Reports on the issue.
To help developers solve the bug, we kindly request that you demonstrate your bug on a show2.tiki.org instance. To start, simply select a version and click on "Create show2.tiki.org instance". Once the instance is ready (in a minute or two), as indicated in the status window below, you can then access that instance, login (the initial admin username/password is "admin") and configure the Tiki to demonstrate your bug. Priority will be given to bugs that have been demonstrated on show2.tiki.org.