System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce RTX 2060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 462.59
Blender Version
Broken: version: 3.0.0 Alpha, branch: master (modified), commit date: 2021-08-10 10:07, hash: rBfe1740ae6a58
Short description of error
None of context menu options are working in Sequencer mode and d&d doesn't work either.
D&d from Outliner into the Sequencer was planned, but never implemented, and then forgotten about, I guess? Also, it is inconsistent that drag and drop from the Outline to the Sequencer doesn't work, when it is working from the Outliner to the 3D View.
D&D of data-blocks doesn't work either:

