The Devil's sight invocation is still not interacting properly with magical darkness. The "immunity from blindness" feature doesn't change the fact that darkness still acts as a barrier to ranged attacks for a Warlock with Devil's Sight, so you still cannot shoot through it with eldritch blast or any spell. This is not how the invocation is supposed to interact with the darkness spell or any magical darkness. It should essentially be as if there is nothing there for the warlock. A warlock with Devil's Sight should be able to stand in the center of their darkness and fire off eldritch blasts without having to jump out of the darkness every time they want to attack. I thank Larian Studios for attempting to rectify this problem with the most recent patch, but it needs another update.