AEM 6.5 Service Pack Breaks Touch UI Dialog Multifield (Coral UI)
The dialog is wired into the Asset Details page and is used for creating an approval workflow for the asset. We have a multifield where the author can select a sequence of groups for approval in the workflow. When we upgraded from 6.5.4 to 6.5.19, the multifield stopped working. The "Add" button is rendered in the multifield, but does nothing when clicked. If you inspect the dialog on the front end, you can see that the button is missing "coral-multifield-add" in the button element. The rest of this dialog, including datepickers etc...works just fine.
Instead of (working)
<button type="button" is="coral-button" coral-multifield-add class="coral3-Button coral3-Button--secondary" size="M" variant="secondary"><coral-button-label>Add</coral-button-label></button>
we get (not working)
<button type="button" is="coral-button" class="coral3-Button coral3-Button--secondary" size="M" variant="secondary"><coral-button-label>Add</coral-button-label></button>
Note that the button is exactly the same, but is missing "coral-multifield-add"
I've tried replacing our multifield with a multifield that is dead simple. E.g. a simple textfield multifield. However I always get the same result where the buttom is rendered inoperable. Any pointers on where to look in Coral UI or how to debug this would be most helpful. I am not getting any console or log errors that give a clue as to the problem.