Operating system: Ubuntu 18.04
Graphics card: NVIDIA Quadro 6000
Broken: 2cd478cf1971 (current master)
Short description of error
The channels list in the Graph Editor is not showing *most* keyframes. In the screenshot and attached .blend file you can see how Seed* shows up, but Lifetime** doesn't.
Another strange thing is that Seed is showing under 'CubeAction' (also ChildSeed if you have children particles), but then there's a ParticleSettings channel with nothing inside.
Exact steps for others to reproduce the error
- Open .blend file (with Load UI turned on), it should be clear when the Cube is selected.