This appears to be fixed in 1.16.0.2. I did have to manually enable 'experimentalgameplay' in the level.dat using a hex editor, but after copying my test resource and behavior packs (along with the world_behavior_pack & world_resource_pack json files) I was able to "cook" my custom fried egg item with custom graphic and it appeared correctly. The eating animation didn't trigger but that could be a bug on my part still. I tested on Windows, but I'm assuming the Ubuntu version will behave the same. I'll test that out later today.
Joe Doyle
This appears to be fixed in 1.16.0.2. I did have to manually enable 'experimentalgameplay' in the level.dat using a hex editor, but after copying my test resource and behavior packs (along with the world_behavior_pack & world_resource_pack json files) I was able to "cook" my custom fried egg item with custom graphic and it appeared correctly. The eating animation didn't trigger but that could be a bug on my part still. I tested on Windows, but I'm assuming the Ubuntu version will behave the same. I'll test that out later today.