Right now it seems like Transcendent Cooldown's item cooldown reduction doesn't affect the following set of items. Note that I've noticed that there's two different icons for item cooldowns so perhaps it's here to indicate that those items aren't supposed to be impacted by Transcendent Cooldown but it's pretty unclear, the items in bold are items with the regular icon so they either should be affected by it or the icon used isn't the correct one.
Gun Items:
- Spirit Rend: The Headshot passive's cooldown isn't affected
Health Items:
- Siphon Bullets: The passive's cooldown isn't affected
Mystic Items:
- Mystic Burst: The passive's cooldown isn't affected
- Quick Silver Reload: The passive's cooldown isn't affected
- Tankbuster: The passive's cooldown isn't affected
- Escalating Exposure: The stacking passive's cooldown isn't affected
- Mercurial Magnum: The passive's cooldown isn't affected
Likewise Superior Duration doesn't currently affect every item, there's some cases where I can understand why (like the Silencer's immunity duration or Healing Rite so that it doesn't reduce the healing per second -but in that case shouldn't it give extra seconds of the same healing per second?-) so, once again, the ones in bold are the most likely to be bugs:
Gun Items:
- Escalating Resilience: The stack duration isn't affected
- Silencer: The immunity duration isn't affected
Health Items:
- Healing Rite: The regen duration isn't affected
- Spirit Shielding: The shield's duration isn't affected
- Weapon Shielding: The shield's duration isn't affected
- Counterspell: The spell parry duration isn't affected
- Healing Nova: The regen duration isn't affected
- Majestic Leap: The barrier duration isn't affected
- Rescue Beam: The channel duration isn't affected
Mystic Items:
- Mystic Reverb: The delay duration isn't affected
Gun Items:
- Spirit Rend: The Headshot passive's cooldown isn't affected
Health Items:
- Siphon Bullets: The passive's cooldown isn't affected
Mystic Items:
- Mystic Burst: The passive's cooldown isn't affected
- Quick Silver Reload: The passive's cooldown isn't affected
- Tankbuster: The passive's cooldown isn't affected
- Escalating Exposure: The stacking passive's cooldown isn't affected
- Mercurial Magnum: The passive's cooldown isn't affected
Likewise Superior Duration doesn't currently affect every item, there's some cases where I can understand why (like the Silencer's immunity duration or Healing Rite so that it doesn't reduce the healing per second -but in that case shouldn't it give extra seconds of the same healing per second?-) so, once again, the ones in bold are the most likely to be bugs:
Gun Items:
- Escalating Resilience: The stack duration isn't affected
- Silencer: The immunity duration isn't affected
Health Items:
- Healing Rite: The regen duration isn't affected
- Spirit Shielding: The shield's duration isn't affected
- Weapon Shielding: The shield's duration isn't affected
- Counterspell: The spell parry duration isn't affected
- Healing Nova: The regen duration isn't affected
- Majestic Leap: The barrier duration isn't affected
- Rescue Beam: The channel duration isn't affected
Mystic Items:
- Mystic Reverb: The delay duration isn't affected
