Biomes 'o Plenty is Incompatible, But Only on Servers

I'm hosting the server myself, but this same issue also occurs on, say, aternos. The server has 8gb alloc. ram, 6gbminimum, (pc has 16gb total), intel i5 12th gen, rtx 2050, the 2nd pc im joining the server with is even better. A modpack with just Biomes 'o Plenty (and terrablender) and the Changed Mod 0.13 will sometimes fail to load newly-generated chunks. Reloading the chunk by rejoining or by moving away and then coming back (i do this by tping) fixes it. reloading chunks with f3+a does not fix it. This never occurs in singleplayer, only on servers. I can provide the server's log and other files upon request. See https://youtu.be/ZE2NwA0w3Pw for demonstration of the bug. Apparently this only occurs with 0.13, earlier versions are fine. Changed mod's config file's bottom three settings, fastandcheap as well as two other cache related configs, do not fix this when toggled.