Probe a Probe
Hi,
It seems that paraview allows you to probe a probe. I believe that this isn't exactly the behavior that is desired. Instead of the probe operation realizing that it has been requested to probe a probe, and thus travel up the filter tree until it finds a suitable source to apply the filter to, it just returns all zeros as the result.
To upload designs, you'll need to enable LFS and have admin enable hashed storage. More information