Nice add-on. Works well. A minor issue. When there are multiple pin tabs with the same URL, this add-on closes the oldest pin tab.. It need to close the latest pin tab. If you could fix this, it would be great.
I cannot reproduce the problem. In my tests, depending on the priority set "Keep newer tab/Keep older tab", the newer or older pinned is kept. Note: the newer tab is the tab with highest id, if you refresh a tab with a lower id, it will be the newer content but still be the older tab because of its id. Let me know if I've missed something.
