Blockupdate Desync on Server [BMC Forge 1.19]

[glacial shoal]

Hey guys, im hosting a server with Better Minecraft [Forge] 1.19 and ALMOST everything works perfectly.

Something is weird tho. If something(any entity but you) or someone (any other player) updates block-state like doors or place fence that would connect, those blocks do not get updated on your end until you click on them/the block next to them to manually request the blockupdate to your client. The blocks remain as either air or ghostblocks until you update them, doors cannot be passed and for examples leaves can be stand on. Once you get your block updated everything is perfectly fine again (this makes doors used by multiple ppl REALLY annoying). This is ONLY on the server and happens for 6 different people. I have hosted servers from said hosting service for years and everything worked perfectly all the time. If anyone can help me resolve this issue or has any idea on what causes this stuff i would really love to get some info on that.

The serverhost does host alot of games and half of the support is not really familiar with minecraft all that much, so until someone with sufficient knowledge is on the support hotline, they refuse to touch things on their end to prevent causing unwanted damage.

I have no idea if i can fix that manually or what causes this issue..
I hoped someone here could help me with this. I have no logs or something but i can show the issue happening live or on video if needed.

[stuck solstice]

you are on an old version of the modpack

if its just doors

[glacial shoal]

no its legit everything

doors

fences

and im on the version released mid december

i think thats version 11

when i use the "every compat"-mod fence varients they even turn themself ONLY for the client into another block temporarily until you update them back to what they are supposed to be

looks really wanky if you place fences and end up with random blocks and weird walls, signs, waterlogged walls and copper buttons

and again this EXCLUSIVELY happens to ALL blocks that have "after placed" blockupdates and those only end up with weird shit if you are not the who applies the blockupdate

something is clearly going very very wrong whenever the client tries to get those updates

since for the server everything is working 1000% as intended

and whenever you join the world all things are loaded correctly

idc if there is any "special" interaction from server to client with blockupdates

but especially those "every compat" fences turn into COMPLETELY different blocks from the same mod

and oh my god don't even get me started on what happened when i tried adding create into the pack

look at this and see for yourself....

its the same fence you can see around the house, it actually tricks my client into making it only breakable with a pickaxe and appears as a completely difference terracotta block until i click on them

and this happens with modded blocks, vanilla blocks, basically everything

some sort if blockstate gets completely messed up or never reaches the client until you request it from the server

same fence, same install of the game

just singleplayer

also i already tried completely reinstalling the server, and also trying a different world(dunno how i came to that idea but i tried it)

doesnt change any of the behavior

this MUST be some server to client interaction that goes completely wrong...

but my dumb ass doesn't know if there is anything that could cause that

[stuck solstice]

dawg i am not installing a 243 megabyte video

i'd suggest installing the Connectivity mod on client & server