Invisible items for some people on my server

[Wee Logan]

Hi there, I have a dedicated server with a few friends and I can't seem to figure out why some items are invisible to them when placed, few examples are dough/pies in oven, Linen Sack on the ground, few other things, wondering if anyone has had similar issues and knows how to resolve, they increased their texture atlas to 8192 and as far as I know all our mods are up-to-date. Thanks