Array out of bounds error in Intel Fortran 2017.0.109

I develop a fairly large Fortran code for which I've used the Intel Fortran compiler for over 10 years. The latest version 2017.0.109 for Windows produces an error on this line of code:

M4%PARTICLE_STORAGE(IPC)%INTEGERS(:,LP%STORAGE_INDEX) = M2%ADOPT_PARTICLE_STORAGE(IPC)%INTEGERS(:,CNT)

The error is 408, subscript #2 of the array INTEGERS has value 1005 which greater than 1000. However, when I write out both of the array subscripts, LP%STORAGE_INDEX and CNT, both are well under 1000, and I checked the size of the arrays too.

Unfortunately, I cannot reproduce this error in a short code snippet. The arrays structures are fairly complicated, and I suspect that might have something to do with it. I am running with full debugging on. Has something changed in the way the compiler deals with derived types, pointers, etc.?