However, when the case is opened in MFIX-21.4 (a Linux version) on Centos7, the geometry panel seems blank and does not show the right cylinder parameters as shown above.
MFIX is opened without vtk through mfix --novtk due to the opengl problem in my computer.
If you are passing --novtk it will not load the geometry correctly. The GUI relies on VTK to perform the geometry manipulation and writing of the stl file(s) that the solver needs.