Credit goes to @askan94 . I just reproduced and recorded.
Use a mottled gem in a shield which does damage while blocking. Start blocking, and while blocking, swap to a torch. The damage continues ticking even though you no longer have the shield equipped.
How are you triggering the damage here? Is this an interaction of Damage On Block and self-damage while in combat?
I’m using the mottled gems which do damage while blocking (not on block) and then simply swapping to torch while still blocking.
Thank you. The damage stops if switching to another shield, I assume, just not for the torch?
(I never realised the gems worked this way. Should’ve tried them! I’ll see how it interacts with enchantment power. I’m sensing a way to get an unintended number of simultaneous pulses. I’ll also check the offhand crossbow just for fun.)
Yeah swapping to another shield does not have this problem.
Hmmm I never thought of having 3 mottled while blocking gems with a mottled pearl…ooooof that might be insane.
Edit - They don’t let you stack those gems.
This is very sad (but for the best).
At least I got an easy trigger for shatters on frozen enemies out of it, and to enable bleed-based lifesteal. (And, with thanks to @askan94, a convenient way to clear pots in the Crucible.)
Easy shatter? I thought all those while blocking gems were elemental and you needed physical to shatter. Wouldn’t you also want to shatter with your biggest physical attack? I have a frost build where I use big one hit rune attacks on ice breaker and they slap. I’m not exactly sure what happens when you shatter, but it seemed to me like it doubles your attack damage, so you’d want to use a physical attack that slaps hard.
Bleed is physical. The mottled spike should do physical damage in AoE.
There are edge cases in which a fast, free shatter might be more desirable, such as using (focus-generating) freeze attacks to set up a big elemental rune, but not wanting the damage of that rune to be reduced by frozen armour.
(I’ve always found the interaction of bleed and ‘elemental’ boosts intransparent. There is a bleed rune on double daggers, which next to blade oil is a neat trick for physical damage with an elemental weapon.)
Can you please edit the post with the steps/conditions needed for this to trigger?
Silas
edit: escalating this!
Thy will be done! 20 cars.
Where is this location ?
It’s in Sacrament, north-east of the bridge that leads to the Rookery 
Please don’t pollute bug reports with off-topic questions though Daniel, we will be glad to answer you in Wicked General for that!
Silas
Oh! Sorry! I’m new here and still learning where to post things…. Thanks !