Bug: simulation crashing with slipping beam particles in parallel runs

[SeverinDiederichs]

I observed a simulation crashing with 2 beams on 40 ranks.
The crash occurred in IO in the last time step with

terminate called after throwing an instance of 'std::runtime_error'
  what():  Chunk does not reside inside dataset (Dimension on index 0. DS: 1000000 - Chunk: 1000271)
SIGABRT

I assume the problem is that the rank has slipped particles from the previous rank, and its own particles and because it does no send any further particles away, it has too many and therefore the chunk is larger than what it should be.

These particles should be discarded.