Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.38
Broken: version: 2.90.1, branch: master, commit date: 2020-09-23 06:43, hash: rB3e85bb34d0d7
Short description of error
when I delete animation of one environment it also deletes animation of 2nd environment
Exact steps for others to reproduce the error
step 1: animate any property of any node in the world tap
step 2: duplicate the world
step 3: try to delete the animation of any one of the world without deleting other
note* I am not sure if I explain it well because of my poor English
so I have attached videos.
which will make more sense.