Using Iris instead of Optifine
Using Rubidium + Rubidium Extras.

So after a bit of troubleshooting it looks like

Are the culprit. After removing these two the blocks show up normally. (Before they were invisible but the logic worked. Especially with the wires. )

Which means this beta does not support Rubidium

[https://www.curseforge.com/minecraft/mc-mods/rubidium/files/4494903]

Oh.. looks like someone posted there as well.

Asek3/Rubidium#515

temp fix in rubidium-mixins.properties
mixin.features.chunk_rendering=false
when i tested it crashed my graalvm after a few secs but should be fine

Thanks! That narrows down the problem to the chunk rendering hacks from Rubidium. I'll look into it. Also provided some details in the issue on Rubidium's end in case any of their devs know what's going on.

Asek3/Rubidium@3b9559e
Fixed in Rubidium's dev versions