Symptoms

In some cases, you may come across an issue when you are converting an issue to a sub-task. One of the possible messages you may encounter is the following:

It seems that you may be trying to convert the same issue XXX-YYYY in two or more tabs. Please try again from the beginning.

Diagnosis

When testing the same occurrence on a clean browser (disable all browser extensions) window, the issue is not reproducible.

Cause

They could be a browser extension(s) that is blocking HTTP header transfer or Javascript from loading. One possible extension is the Exceda Akamai Headers.

Resolution

Disable the browser extension, or find an alternative extension.