T21 Protection Warrior Glitch-Permanent 50% Damage Reduction (Patreon)

The youtuber "Stankie Gaming" reports that the damage reduction bonus on the tier 21 is creating a permanent and gamebreaking 50% damage reduction from ultiple blocks, in a very recent video where he states the bug is still live. The relevant section of his video is here: https://youtu.be/v93zHAh7bgA?t=85 .

Normally I would not link directly to someone else's exploit discovery since I prefer the content on this channel to be unique. However, in the case of smaller youtubers reallistically most Patreons will not be aware of the content, and in every case I can think the youtuber was delighted to receive more exposure.