Cannot access variables when a Repeater is within another repeater (Chronoforms 7)

When a repeater (R2) is nested within another repeater (R1), all the variables are derived from R1. There doesn't seem to be any way to get R2's data.

Eg.
When {var:field} is used within the nested repeater (R2), it gives the parent repeater (R1)'s field values.

Edit: This seems to be the issue when the field names are the same for repeater 1 and 2.