First of all, thanks for the latest update you made to fix the so called "ghost model" bug. Despite that, it's still doesn't fix the Hunter's (from HL2 Episode 2) flickering during its death animation.

Anyway, as the title suggests, this bug involving the vanilla fog effects happens when I disabled the addon's fog settings (particularly the "ho_fog_enabled" command). Usually, almost any map has a slight fog at a distance, but this isn't the case when I have this addon installed. Weirdly enough, the fog effects on the 3D skybox remain unaffected even with the addon's fog settings are disabled.

This bug could be immersion breaking on foggy maps like gm_combine_onslaught_v2 and gm_battle_trench.