Did you clear your browser cache?  After I installed SP2 it didn't seem to work - clearing my cache fixed it.

Do you have ACS Commons installed?  I've only ever seen it with that installed and have not figured out how to fix it.

This functionality is antiquated and useless.  I highly recommended doing a 1-1 migration and building the components yourself.

As Scott said, I don't think in Touch UI you can do this in 6.0, however, you can render the page with ?wcmmode=disabled and use Chrome with the inspector open to display in Mobile and Tablet modes

The external link is Welcome

You can use this Experiencing Adobe Experience Manager - Day CQ: AEM 6 SP2 - TouchUI Adding Dynamic Select Options as a guide.I would also highly suggest you move your selection options out of the "apps" folder.  Take a look at the ACS Commons Generic List functionality, if that doesn't work for you...

I found some posts on doing this in Classic UI, but nothing in Touch UICQ Dialog - Generate dynamic rootPath with ExtJS Plugin | 6D Labs extjs - How to configure a rootPath in CQ Dialog depending on current page - Stack Overflow

I totally understand your hesitation with it, and if it was more than just overlaying the dialog I would agree it's probably not a good approach, but the view/business logic stays the same between components.  You're either going to have to maintain JavaScript to customize, or use OOTB functionality...

I don't believe there is a clean code solution to this simply because of what the UI outputs for the data attributes.What may be a better idea to consider is overlay your current component with a new one and only change the dialog.  This way you can give the component a different group and a differe...

I would suggest the footer right before the </body> tag so they're not render blocking.