Both point plane interpolator and SPH plane interpolator can't handle group datasets
Here is a screenshot of two SPH simulation results (dataset of points) on two neighboring quadratic domains. In the simulation, the SPH interpolation is including particles from the other set of particles as well. To do the same, I grouped the two results with the "Group Datasets" filter.
When I now apply the "SPH Plane Interpolator", it is only using particles in one of the results (randomly). When I change some parameters or reload one of the files (i.e. triggering a re-rendering in ParaView), it randomly switches between the two results, always interpolating only one.
The same happens with the "Point Plane Interpolator". I am using ParaView 5.11.1.