Drone: Shield does NOT give 10% damage reduction to the warden target as stated in the description.

[fluid trench]

It does appear to increase elemental resistances and blight resistance by 10

first picture shield drone active and second picture heal drone active

[fluid trench]

You can see that there's no difference in damage reduction between the shield drone and the healing drone.

[wanton sand]

This is because it is a special type of DR that bypasses the 80% limit via reducing enemy dmg instead

So it will not show up on the traditional DR number

Just like Bloodbond or Song of Eafir

[fluid trench]

Why is increase elemental resistances and blight resistance by 10 ?

And you see in a patch that is special type of DR ?

[wanton sand]

Maybe you have shadeskin, and patch notes don't say it, it's just how some forms of DR are coded. Like song of Eafir which reduces enemy damage, allows you to bypass 80% DR with it. Shield drone just happens to be that type of DR

[fluid trench]

I use the same traits/build on the 2 pictures, no shadeskin, the only diff is the drone => for me it's just a bug (or the description is not good) and the shield drone provide elemental damage reduction