I play with Optifine and I've been playing on my single player world recently, and came across Pillagers that were invisible. At first I thought it was maybe particles being turned off if they had invisible potions, but it wasn't after checking. After that I left and re-entered the world, and the Pillagers were fine after that, but then I saw the Skeletons were also affected by this? It looked like the models just weren't registering. I'm not sure on how I should get a video on it, because I can't run any recording software currently.
MC-218560
Invisible Mobs??
Resolved
Invalid
0
Thank you for your report!
However, this issue is Invalid.
Your game, launcher or server is modified.
If you can reproduce the issue in a vanilla environment, please recreate the issue.
Any non-standard client/server/launcher build needs to be taken up with the appropriate team, not Mojang.
Any plugin issues need to be addressed to the creator of the plugin or resource pack.
If you have problems on large servers, such as The Hive and Hypixel, please contact them first as they run modified server software.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki