Issue with Nested multifield using coral UI multifield

[#1]

This coral3 example works fine on both 6.3 & 6.4 -

Experiencing Adobe Experience Manager - Day CQ: AEM 64 - Touch UI Nested Composite Multifield Using ...

coral2 -

Experiencing Adobe Experience Manager - Day CQ: AEM 63 - Touch UI Nested ( Multi-Multi ) Coral 2 Com...