Grease Pencil not rendering FX correctly on F12?

On the left: Rendered INSIDE the viewport (notice the last slot visualization active: this is final look)
On the right: Alpha from glow effect is not rendered in zbuffer correctly. Object appears to have no transparency


Zbuffer is as hard as a stone.
Transparency on film didn´t affect FX on Grease Pencil
I´m using EEVEE in this example. But this behavior happens on EEVEE and Cycles.

Any help will be appreciated.