Version (make sure you are on the latest version before reporting):

Forge: 30.0.50
Mekanism: 9.9.3->9.9.4 dev

Rendering of things like lava in a fluid tank in first person does not show any glow. This has to do with things now being batched, and our GL changes not being taken into account. We may be able to add the glow vertex data to MekanismRenderer#renderObject and the inner methods. It might be worth while to also just fully remove our custom glow handling in exchange for trying to do it via vertex data/just disabling the lightmap if it is a fullbright glow.