it seems you might be incorrect
I wasn't.
Your original question was to know if the bug triggers when the jewel destination is a shield, and it definitely does.
And yes, only the ED
on the jewel that triggered the bug can become ignored as a consequence (thanks
for the time taken to confirm).
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For the record, when it comes to that bug, there's a special case.
If the bug is triggered by min+ED
OR max+ED, the ED is actually completely functional when using ranged attacks.
The cherry on top is that the char stats window says it isn't.
2 separate bugs at work here =]