EDIT - Just had the snowflake appear on a STAR into San Jose, but not the next flight into LAX.
It might be when fixes have both an above and below restriction that it appears, and a descent initiates.
I've seen someone else say that on a forum post.
* * * * *
That's all on and green. VNAV armed, alt set to the first restriction and ALTS PATH displayed.
Are there any specific alts it needs to function, or equal to or below a restriction?
I pressed a few buttons at random, and it went into FMS1 PATH/ALTV modes with the snowflake, so VNAV is active.
Just using FLC for now instead, so it's not a showstopper. Has anyone else reported the issue?