I've created a plugin and was working properly, when I tried to access it today from JIRA I saw the following
As normal it starts by reporting Loading add-on Retainer Tracker Plus.
After a while it changes to Add-on Retainer Tracker Plus is not responding. Wait or cancel?
What's interesting is that when I inspected the element to see if there was an js errors that were preventing the plugin to load I saw that the iframe was fully loaded.
What could cause this? It's difficult to explain so please feel free to ask questions to better understand the issue.