We had this discussion with Storm in the following thread (follow up discussion follows). The considered skills are all barbarian skills.
When we used Relentless, and when we drop below 35% HP, resource cost reduction is doubled. This is reflected in sheet resource cost reduction value. However, Captain Crimson Set is supposed to provide an equal amount of damage reduction %. This has been observed to not work as intended in the design of the captain crimson set.
Can you please take a look since relentless shows the RcR change in the sheet and Crimson should consider it.
After stating this issue, it brings the question whether similar bugs may exist considering Sword and Board passive of the barbarians? This passive provides resource cost reduction when a shield is equipped. If a bug exists for relentless, it may happen in sword and board passive as well. It would be nice if you could take a look at it and consider if patching it is required or not.
Thank you very much
Regards