This was the former default web application built on top of the Apache Fineract platform. It's now deprecated and replaced by the the Mifos X Web App (https://github.com/openMF/web-app maintained by the Mifos Initiative as a reference solution for financial inclusion. It is a Single-Page App (SPA) written in web standard technologies.
Existing and newly created clients aren't displayed.
To reproduce
Test Instance Tested on https://demo.openmf.org/reskin which is running Mifos X 16.11.01