Operating system: Windows-7-6.1.7601-SP1 64 Bits
Graphics card: GeForce GTX 660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.86
Broken: version: 2.80 (sub 74), branch: master, commit date: 2019-07-05 16:36, hash: rB699193713fc0
Short description of error
If I pressing Alt and trying to change repeat length for strips, it changes not for selected strips or tracks, but for selected objects.
If one object have two strips and both selected and object is selected too, only one strip`s repeat can be changed with alt-drag over field.
Similar situation for scale, and other fields.
Here the video
In my opinion only selected strips and tracks should matter, not selection of objects, because we operate with strips.
Exact steps for others to reproduce the error
Here the scene.
Deselect objects, select strips, try to change their property (Repeat) with Alt-drag over field.
Then select two cubes, all strips and try again.
Then select all cubes, and try again.
Select cube with two strips, select both strips, try again to alt+drag theirs repeat length.