List + list prints differently in GS 2.0 vs 2.1 VPython

[wigie]

GlowScript 2.1 VPython
# Minimal oddly-working program
a = [1, "2"] + ["three", 4]
print(a)  # '[1, 2three4]', weird in GS 2.1
print(str(a))  # '[1,"2","three",4]', normal
# EOF

Naively, I'd expect the two print statements to produce similar output, and in GS 2.0, they actually do. In both GS 2.0 and 2.1, the concatenated list otherwise seems to behave like a list (type(a) = 'object', has length 4, etc.).

[BruceSherwood]

Thanks much. Fixed.