AliasSeq different from just using the symbol name(s)?

[z]

I've tried to group together a bundle of alias template 
parameters with AliasSeq, but while without it works just fine, 
when the verbose parameters are grouped with multiple AliasSeqs, 
the lengths of the array parameters passed through AliasSeq are 
0(inside the templated function, before the call it's still OK) 
and a range violation/exception occurs.

This is weird because the templated function does not change the 
length of its array parameters, and printing the parameter's 
string name to stdout at runtime shows that they are supposedly 
the same(in symbol name at least), but somehow it isn't the same?

To see what i mean : https://run.dlang.io/is/VXDRL4 (i could not 
manage to trigger it here however.)

Big thanks