if the handling of strings is different in 4.6x than in 4.5x it is a bug.
oh, and control characters changing the length of the string is expect-able.
chr(0) is one for example. kixtart does not support it. but for len, the string ends at chr(0) and there might be a whole more characters in the char-array that makes the string.
I am thinking there is something funky like that going on inside kixtart when it encounters this chr-space of "undefined"
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