The problem is the depth and color passes are not producing the same depth value on Nvidia cards. This is likely a driver bug.
However, if I switch to a deferred renderer, the problem magically goes away because there would be no separate depth pass to worry about. Since this there is a good probability I will end up doing this, it does not make sense to put more effort into the vertex animation shader right now.
I need to release the Leadwerks 5 Steam store page in order to get an idea of how many wishlist adds a new page will achieve. Depending on that result, I may launch version 5.0 with the current clustered forward renderer, or I may switch it over to deferred before launch.
Steam Next fest is happening right now, and the Summer sale may occur soon. Launching a store page during this period is a bad idea because you will have lower visibility. So it will go up after the Summer sale ends. Otherwise the Leadwerks 5 page and demo would be up right now.
So the answer is we can expect to see this soon, but there is a chain of events that has to happen first.
Moving this from bug reports, because this is not currently a supported feature.