MC Version: 1.18.1
Forge Version: 39.0.79
Supplementaries Version: 1.18.1-1.1.11
SnowRealMagic Version: 1.18-forge-3.2.2

This issue only occurs when the mod "Snow! Real Magic!" is installed. The mod adds snowlogging mechanics to several blocks, including fences. This appears to interfere with fences with sign posts on them, as seen in the image below. The fence portion does not seem to render, but the snow overlay stays.

I am not sure how this can be fixed, but if this cannot be solved on your end I can open up an issue on their GitHub. Do note this is not the new alpha, so this may not even be a problem anymore, or it could remain the same.

I'll try to make it compatible. Always knew about this but it just came to mind something which might make compat immediate since both blocks work in the same exact way after all

Thanks, glad to hear!