Upon further inspection (And realising that Bloom is in one of the test scenes), you're right. Bloom does work, it's just the glow (Material Emissions) that disappears. My bad.
So I guess to rephrase my original question, is there a way to bring back the Emission Glow?
CRT Filter Off:
CRT Filter On:
Edit: The particles themselves are shuriken particles, the material is just the standard URP particle material.