This is a new type of Bug that I found in the Mcreator Version 1.8.1,
You can create custom fluids in McTreator. In addition to the liquid/fluid you can also click on a chop with the MCreator creates a bucket to this fluid. In the workspace example in the attachment, I have the bucket under "Miscellaneous-Tab" saved, so you can find this bucket in the Miscellaneous-Tab.But after I open the tab, the game crashes. This also applies to Survival.
Maybe the game can't render the texture, becuase it crashes (in this example) when I'm near to the custom fluid bucket in the inventory, so when the player will see it in the next few seconds the game crashes. The fluid still generates normal. But if you didn't select "bucket" then you will not be able to right-click the fluid.