Vtk image display problem

After the latest version of mfix software is installed, when the solver is created and the case is run, the particle outline as shown in the following figure appears blurred in the vtk image. Is it the problem of the installation environment?

Is this particle data? If so did you save the particle diameter in the vtp file? Do you get the same blurred image with other simulations?

Particle diameters are saved in vtk files, and similar situations occur when running other cases

What operating system are you using? Please go to the GUI’s main menu> About MFiX and Copy/Paste the info. Please attach your test case and the steps to reproduce.

MFiX: 23.3.1
Python: 3.10.12 | packaged by conda-forge | (main, Jun 23 2023, 22:40:32) [GCC 12.3.0]
gfortran: GNU Fortran (conda-forge gcc 13.2.0-2) 13.2.0
openmpi: mpirun (Open MPI) 4.1.6
Qt wrapper: PyQt5
Qt: 5.15.8
qtpy: 2.4.0
numpy: 1.26.0
nodeworks: Unavailable
flask: 3.0.0
psutil: 5.9.5
VTK: 9.2.6
OpenGL backend: 2
System info: Linux-6.2.0-35-generic-x86_64-with-glibc2.35
Install location: /home/mfix/anaconda3/envs/mfix-23.3.1/share/mfix
Solver source: /home/mfix/anaconda3/envs/mfix-23.3.1/share/mfix/src
test case:2D DEM fluid bed
steps:build solver(“Build options”check DMP and Build solver in parallel)>run

Looking at my runtime environment there is no problem, is this a bug?