There's a "Switch to UI15" button in the System Settings window that allows users with the "admin" role to "downgrade" to UI15:
...and there's a "Switch to UI16" button on the Settings drop down in my dev instance running patch0-hotfix1:
... but it has disappeared in a client's patch1 version:
I know it is controlled by the "use.concourse" User Preference, but what happened to the switch button?
Turns out it was due to the "glide.product.help_show" system property being set to false. Setting it to "true", logging out then back in solved the issue, BUT, if you have it set to false, it's because you probably want to hide the help icon in the first place:
You might have a reason for that and will not want to set the property back to "true". In that case, you can create a Module as a workaround:
Create the Module with the following details:
Roles: admin
Link type: HTML (from Arguments:)
Arguments: <a id="u_switch_to_ui16" class="menu nav_menu_header" onclick="top.location.href = '/navpage.do?sysparm_userpref_use.concourse=true'"> Switch to UI16</a>
Add it to whatever Application you want (Self-Service or whatever). It will only show up for your admins. It will be there even in UI16, but it's just not worth writing a client script hack to fix a very small issue.
Why they used the "glide.product.help_show" system property for 2 different purposes is a whole other issue.
