mc version 1.16.5 on curseforge 36.2.39

When using anything from macaws bop or byg, the items placed turn into glitched versions of a different door/trapdoor etc:

there is a split second where you can see the correct texture before it changes:

trapdoors glitch with water:

another example:

Server log: https://mclo.gs/Xis6KLf

I have tested with Macaw's BOP and BYG but i don't have this bug with element in screenchot.
Is your modpack available on Curse forge or Modrinth (is it a personal modification of an existing modpack)?

Its a personal modification of the pokehaan craft 2 modpack on curseforge

I reconstructed your modpack and didn't notice anything on the client side, but I did notice that you had bukkit, maybe a plugin isn't up to scratch even though when I installed and launched Server_Utils-1.16.5-2.8.0.jar as a client the game crashed.