Resolve "ParallelTTracker crashes when using particle matter integration and space charge solver if all particles are in material"
requested to merge 295-ParallelTTracker-crashes-when-using-particle-matter-integration-and-space-charge-solver-if-all-particles-are-in-material into OPAL-2.0
Closes #295 (closed). The same as for the master branch but this time for the OPAL-2.0 branch