Invisible Mobs

[Mystique]

Hi Everyone, sometimes the Mobs on skyblock seem to be invisible, sometimes I can only kill them with a bow because the sword just does not hit them. Please fix this

 

[mlggaimer]

Please give more information on the mob invisible glitch like: Java or Bedrock.

 

[Mystique]

Java, whenever I try to fight mobs on the birch Island, they appear to be invisible. When I die it sometimes changes and the appeare but most of the time it does not

 

[FBX17]

1) Are you using Optifine or any other client modifications?
2) What resource packs are you using?
3) What version of Minecraft is this happening in?

From my experience, this sounds like a bug in preview_OptiFine_1.16.1_HD_U_G2_pre4, which caused some mobs to only exist server-side, and not client-side (therefore swords don't work, but projectiles do). Other coremods could cause this issue too.

I highly doubt it'll be the resource pack, but I wouldn't put it past some internet no-life to create a resource pack which effects more than just the renderer.

If you're running Minecraft completely vanilla, then try to record the glitch and make separate bug reports here:
https://www.cubecraft.net/link-forums/java-bug-reports.76/
and here:
https://minecraft.net/en-us/bugs/pc/