By default, Collapsible Content Containers are not given system IDs, and are thus linked as 'undefined' in On This Page (which fails to work).
Published May 25, 2017
Some UBCMS components, like Title, can be given an ID, which acts as a target anchor to support linking. If no ID is provided, the UBCMS generates an automatic ID.
Collapsible Content Containers are not given system IDs, and are thus linked as 'undefined' in On This Page (which fails to work).
We will investigate this issue further.
Meanwhile, the workaround is to give your Collapsible Content Containers an ID. Indeed, it is best practice to give all of these linkable components an intuitive ID to support direct linking.
Requests submitted by the online forms will be triaged quickly by the UBCMS Help Desk.
Also, consult the documentation provided by Adobe Day, the vendor of the UBCMS software.
Please note that some of the vendor instructions may not apply and some features may not be available, as the UBCMS has been modified to suit the needs of the UB community.