Operating system: Windows-7-6.1.7601-SP1 64 Bits
Graphics card: GeForce GTX 660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.71
Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-02-02 23:17, hash: rB2ce1400297d7
Short description of error
Copy and paste material actually work as copy of all data from one material to another.
Copy to selected do not work as copy, it acts like material linking/referencing