The igniter rod on my new 590 is flush or slightly recessed.I bought mine in August 2021 as well. No lid detonations ever. I believe I did come close after shutting down directly from 400 to off one time just about when this started becoming a topic. I no longer do that. I have started with lid closed and lid open with no meaningful difference other than piece of mind with the lid open. I clean out everything before/after long cooks and manually re-prime the fire pot with a small handful of pellets after cleaning. My igniter extrudes about 1/16 of an inch from the housing.
The last two cook it would not light unless I made 2 startup cycles.
By then the pot is 40% full of pellets.
Can the igniter protrude too far?
I am thinking of adjusting out 1/8” proud (beyond face)
Hoping that will correct.