I'm currently trying to keyframe the ratio of objects emitted by a collection particle system (e.g. the particle system emits a set of objects in a collection). The "Count" property within the "Use Count" section has a tick next to it indicating the property can be animated, but when I try to animate it, I get the error "failed to resolve path to property."
Is this just a bug in Blender's 2.8 release candidate, or is there something I'm missing?