Vectorization unsing pragma simd with Compiler Version 12.1 and 13.x

I have a code (part) that I vectorized using pragma simd. This worked fine with the Compiler 12.1.

However, compiling the same code with 13.0 or 13.1 breaks it.

Regarding pragma simd, are there any code constructs that work with 12.1 but are no longer supported by 13.x??

You can finde the code here (loops starting at line 137 and 177):

https://github.com/TUM-I5/SWE/blob/SSE_performance_measure/src/blocks/SW...

The solver that is called is here:

https://github.com/TUM-I5/swe_solvers/blob/master/src/solver/FWaveVec.hpp