Weight paint not showing in Dynamic Paint #67690

System Information
Operating system: macOS 10.14.6, Darwin-18.7.0-x86_64-i386-64bit 64 Bits
Graphics card: AMD Radeon Pro 560X OpenGL Engine ATI Technologies Inc. 4.1 ATI-2.11.20

Blender Version
Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-24 14:22, hash: 507ffee6e1
Worked: (optional)

Hi everyone. If what I'm describing is a design decision and not a bug, my apologies for wasting your time. :)
Unlike the previous version of Blender 2.79b, weight paint will not show in the viewport when adding Dynamic Paint physics to a canvas object.
Exact steps for others to reproduce the error

make a plane
go to the physics tab and enable Dynamic Paint, then Add Canvas
under 'Surface', change the Surface Type from Paint to Weight. In the old version, the plane would turn blue, and interactions between the canvas object and a brush would show up.

Added subscriber: @lasphere

#62882 was marked as duplicate of this issue

#67766 was marked as duplicate of this issue

Added subscribers: @Jeroen-Bakker, @WilliamReynish

It's not a design decision per se, but more a consequence of how the viewport works now.

@Jeroen-Bakker
It would be useful to see this information - perhaps Workbench could show it? We could have a toggle for it inside the Canvas controls, for example?

Added subscriber: @lichtwerk

This was tried to be shown as an overlay #63819 (Overlay: DynamicPaint overlay), but it was decided to show in a more general manner...

Added subscribers: @DimitriBastos, @ZedDB, @YAFU, @StephenSwaney, @CraigD, @dark999

I think this deserves to be at Medium Priority [some sort of ability to visualize this is needed -- even if in another form of some generic system to easily visualize data layers from a modifier]

Added subscriber: @FinbarrORiordan

Added subscriber: @gnastacast

I submitted a patch about a month ago that fixes the preview problem, in that it at least shows up in weight paint mode. It just needs review. D6072

Added subscribers: @avclubvids, @vr_sebas, @zeauro, @neouser, @dfelinto, @Hookflash, @3di, @hoanguk, @Poulpator, @Pandu93, @VuPham, @Mantissa, @Sergey

Closed as duplicate of #71947

The weight are currently drawn when using the Weight Paint mode. Patch has been applied to b2.82. That will solve a part of this ticket.

Better workflows will be added by the attribute paint project. So I will merge this ticket into the attribute paint proposal. The attribute paint also needs to visualize the weights in a more persistent way. Current weight painting overlay is just to focused to certain workflows.

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Weight paint not showing in Dynamic Paint #67690