With either of these mods installed, the only Foggy Border feature that works is removing the blue lines, while the fog effect is not working at all. The logs are essentially empty so not attaching any.
Thank you for reporting the issue.
The Problem seems to be the implementation of their mixins. I will try to reach out to the Devs to look if a change that will make the mods work together can be done.
MC 1.20.4 Foggy Border 1.1 Simple Fog Control 1.4.0 or Custom Fog 2.2.0
With either of these mods installed, the only Foggy Border feature that works is removing the blue lines, while the fog effect is not working at all. The logs are essentially empty so not attaching any.