For instance, the chrome extension "The Great Suspender" will take over the URL of a suspended tab.

It will look like: chrome-extension://klbibkeccnjlkjkiokjodocebajanakg/suspended.html#ttl=Google&pos=0&uri=https://www.google.com/

Tab Organizer seems to treat this as its own grouping and therefore will not group all google tabs together. I feel that if Tab Organizer looked at the URL and ignored everything from "extension:// to uri=" it could retain the proper grouping of tabs, even when an extension takes over.

I really love Tab Organizer and I can't live without the great suspender, but unfortunately, they do not play well together.