MedSpares is a medical equipment supply company based in Vancouver, BC, Canada. They sell and deliver high-quality medical diagnostic parts. As a start-up with an offline business model, Medspares didn’t have a website, and they were accumulating products faster than they could sell them. They looked to Acro Commerce to develop a robust, secure, and efficient eCommerce solution to meet demand and scale the business to handle an increasing amount of transactions while decreasing fulfillment time.
Multiple people have reported that the patch fixes the issue for them.
As I reported on that issue two years ago, it's a really hard issue to troubleshoot, so it would save Drupal users who encounter the bug a lot of trouble if we could get the patch committed.
In January 2017, the status was changed from Needs Review to Needs Tests.
after upgrading the core of Drupal7 site to the version 7.59 and after upgrading other modules I have a "+" character in the output of each page of Drupal. This is the source I can see: