Shadowflame Armour Patch Shield Bug

Hi, hope you’re well.

Been playing Prot War recently, and played a lot of it in Shadowlands.
I put a Shadowflame Patch onto my crafted shield. It does damage to the target, and a small amount of self damage.

The issue I’m having is that having this patch on greatly reduces the durability of my shield. I get that the shield is taking a lot of damage, but out of hundreds of hours of playing Prot Warr, I’ve never had a shield completely break mid-combat while the rest of my gear is white. Its happened twice in one day now, within a few keys.

I believe it has something to do with the Shadowflame patches self damage.

Its kind of annoying having to hearth out to repair despite entering fully repaired, can it be looked into please?