I like to make piston doors with this mod, but during the opening and closing you can walk through the blocks until they have stopped moving. Is this intended?

I sadly cannot reproduce this with the versions mentioned above.
Users tend to have collision fixed when they updated to this optifine version

I have the latest forge, optifine and create

If you are using Optifine, try to update it to a more recent version

are you a bot?

that's your answer to everything

Try it, I'm serious. This has been a common issue with G6

i have g7

updated yesterday

Are you on 1.16.5 or .4?

1.16.5

Hmm, what're the exact versions of forge, optifine and create in your instance?

Forge: 1.16.5-forge-36.1.4
Optifine: 1.16.5-Optifine_HD_U_G7
Create: Create - mc1.16.4+5_v0.3.1b.jar

i had the same problem. even tho i have the newest optifine, i still had an older version downloaded. and the minecraft launcher for some reason always chosse the older version.

so my advise is to delete all older optfine versions.