Minecraft 1.16.x offline /team problem

Hi Minecraft Team.. My minecraft version 1.16.3.. sometimes I add enemy mobs to create my own map. **and I open a group and add the enemy mobs to the group, so they don't attack. However, this feature will not work for pigs, pigs and zoglins. I want to use these mobs when I add a map.  But forming a group doesn't work for these mobs.  works for every living mob except them. I absolutely do not ask for help from you. I just found a bug and I'm reporting it to you.