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: 2021-09-22 05:59, hash: rB3fa64263927f
Short description of error
Add several strips, select them and notice that the last selected doesn't get a white outline in the Preview:
