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dynamic weight paint doesnt seem to be working on both animated objects and simulated objects. Also initial colour is assigning wrong values to vertices when using dynamic vertex paint instead of weight paint.
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System Information
Operating system: Windows-10-10.0.17134 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.70

Blender Version
Broken: version: 2.81 (sub 5), branch: master, commit date: 2019-09-03 16:04, hash: rBb3b59e3b5657
Worked: (optional)

Short description of error
dynamic paint doesnt work at all when in weight mode, vertex paint mode messes up the initial colour vertex values.

Scene here:

explanation left to right (image above)


dynamic weight paint doesnt appear to be working at all. check the far left tyre and ground. I've set it up so that the tyres vertices will increase in weight the closer they get to the ground, and then set up a particle system which uses the vertex weights for the particle density. Nothing appears to happen. I cant find a good way to visualise the vertex weight, I tried going into edit mode and weight paint mode, but no reaction in either. Also the particles density doesnt change as the tyre hits the floor, which is another indicator nothing is happening.


dynamic paint type canvas, initial colour set to vertex color results in the existing paint being in the incorrect place. (see middle sphere and plane and check vertex paint mode to see original paint, then press play in object mode to see dynamic paint incorrect representation)


In case the dynamic weight issue was related to the current high priority bug of the physics system being broken, I also set up an animated version on the far right set to dynamic weight paint. This also results in no weight data being created by the brush (sphere) onto the canvas object (plane).

Any chance you could also add a vertex weight option to the overlays when not in edit mode? It would be good to be able to see what's happening to multiple object's weight values at the same time (not possible in weight paint mode).