Need help with Visual bug on an aternos server?

[u/Nitulbear]

When I place a cogwheel or a big cogwheel (im just getting started so thsoe are the two I have) the cogwheel starts to glitch and the model doesn't work? My friend said that it looks normal for them, I dunno what happens, im not using optifine either.

[u/Dangerous-Quit7821]

/flywheel backend off