I usually rightclick all mapnodes to instantly teleport/start. I noticed this season when trying to spawn the first Empowered Harbinger that it just never spawned.
Turns out that if you rightclick the boss echo it takes it as the Harbinger Crest is unticked.
If I left click and then click start it works, and even if I left click to make sure it’s ticked, close it down, then rightclick, no Harbinger will spawn.
Not a huge deal, but I feel like either adding a tickbox next to the echo window in the top left, or some sort of warning, would help