UI logs showing a Client-side error on XDCR system test (no xdcr/node failures however)

Cluster setup: c1:c2::10:10
biXDCR_bucket: c1 <---> c2
uniXDCR_src: c1 ---> c2 :uniXDCR_dest
Front end loads on c1 and c2 for biXDCR_bucket, and on c1 for uniXDCR_src.

Live clusters at:
c1: http://ec2-177-71-230-72.sa-east-1.compute.amazonaws.com:8091/
c2: http://ec2-175-41-186-167.ap-southeast-1.compute.amazonaws.com:8091/

The UI Log:

Client-side error-report for user "Administrator" on node 'ns_1@ec2-177-71-230-72.sa-east-1.compute.amazonaws.com':
User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_5) AppleWebKit/537.4 (KHTML, like Gecko) Chrome/22.0.1229.94 Safari/537.4
Got unhandled error: Uncaught RangeError: Maximum call stack size exceeded
At: http://ec2-177-71-230-72.sa-east-1.compute.amazonaws.com:8091/js/jquery.js:4029
Backtrace:
Function: collectBacktraceViaCaller
Args:

---------
Function: appOnError
Args:
"Uncaught RangeError: Maximum call stack size exceeded"
"http://ec2-177-71-230-72.sa-east-1.compute.amazonaws.com:8091/js/jquery.js"
4029

Access:

ssh -i SanPauloQAKey.pem ubuntu@ec2-177-71-230-72.sa-east-1.compute.amazonaws.com
ssh -i SingaporeQAKey.pem ubuntu@ec2-175-41-186-167.ap-southeast-1.compute.amazonaws.com