At some point soon we'll be updating encoded passive skill tree URLs to version 5. This is necessary to include allocated "extended" passives such as those from cluster jewels. The old format:

(uint32) Link Version (4)
(uint8) Class
(uint8) Ascendancy
(uint8) Fullscreen
(uint16) Hashes[n]

The new format:

(uint32) Link Version (5)
(uint8) Class
(uint8) Ascendancy
(uint8) Count of Hashes (n)
(uint16) Hashes[n]
(uint8) Count of Extended Hashes (m)
(uint16) Extended Hashes[m]

Once updated the website passive skill tree will support loading both link versions. New links generated will use version 5.