Guild Wars 2

If you interrupt a Chronomancer blocking with Echo of Memory with any unblockable skill when you have Lightning Rod trait, you will automatically refresh it because L-Rod procs before the interrupt. (If an attack is blocked, Déjà Vu is usable for a short time.)

Without L-Rod on, (Static Field, Unsteady Ground, Earth Shield pull) the interrupt does not allow the mesmer to use Déjà Vu after because no attacks are considered blocked.

So I’d like to report a bug.
Lightning Rod damage happens before the crowd control. It means that someone blocking or rolling on any unblockable CC will block or evade the Lightning Rod. Moreover, Lightning Rod damage is now amplified my Tempest’s Defense 20% damage increase because the target is not yet considered CCed when Lightning Rod strikes.

PS. This bug has been there long enough. It is crippling and frustrating.
And yes, it is also in the bug forum: https://forum-en.gw2archive.eu/forum/support/bugs/Lightning-Rod-and-Tempest-Defense/first#post5800962