As for the Goldstein filter - A good compromise to avoid these artifacts seems to be to run the filter twice using a low alpha (0.2) and very small window sizes (32, 7). The second time improves things a bit.
Snaphu v2.0.0 is the default install with apt-get install snaphu on Ubuntu 19.10 (Eoan Ermine), if you like to live on the edge with your Linux distributions. My SNAP / Snappy install works on 19.10.
I am now testing it a bit - the -S option may be interesting, it refines the solution with one tile using the tiled result. And the connected component mask can be grown when using tiles (not possible in 1.4.2).