Segfault in paraview 5.6.0 when right clicking in renderview on a tube filter linked to a programmable source

I have written a macro to read data from our own custom data files, using the programmable source (to reduce data storage). It works very good, except for one specific case.

When I load a line object, put a tube on it and afterwards try to right click on the tube, I get a segmentation fault (core dumped).

However, for other objects (lines, points, spheres, triangles) the right click works as expected.

Notes:

• I'm using paraview 5.6.0 (downloaded as binary package) on Ubuntu 18.04.
• When I load the PolyData line object using .vtp-files instead of the programmable source, then there is no problem. (However, writing vtp's is really not desirable because it takes up a lot of hard drive space.)
• In paraview 5.5.2, everything worked perfectly. (But the scratched OSPRay material is a really big advantage in paraview 5.6.0)

If needed, I can provide my reader macro's and the data files.