There's a conflict between moreoverlays and jei on my system. I've just bumped the version.

Mod moreoverlays only supports jei 9.7.0.229 or above, and below 10.0.0.0
Currently, jei is 9.7.0.226

With the following combo:

moreoverlays-1.20.5-mc1.18.1.jar
jei-1.18.2-9.7.0.226.jar

In other words, we need to bump one of the mods to secure proper support.

Let's just forget this...

My Minecraft-launcher was so kind and used a newer version of the mod, which I tested due to a bug between JEI and more overlays updated. (See this for reference.)

I simply replaced both mods with the proper versions defined in ATM 0.4.29.

My bad!