Proposed resolution:

Adopt the proposed resolution in N2423.

Short seed vectors of 32-bit quantities all result in different states. However this is not true of seed vectors of 16-bit (or smaller) quantities. For example these two seeds

unsigned short seed = {1, 2, 3};
unsigned short seed = {1, 2, 3, 0};

both pack to

unsigned seed = {0x20001, 0x3};

yielding the same state.

See N2391 and N2423 for some further discussion.