Some persistent data code was disable due to a deeper design issue, which meant some updates were not communicated to renderers. Dependency graph updates work in two passes, once where Blender scene animation updates are done, then app handler scripts can run to make further scene modifications, and then the depsgraph is updated again to take those into account. Previously the viewport would update renderers twice when such app handler scripts were present. Now both viewport and persistent data rendering update the renderers only once, accumulating updates from both passes.