If i remember, in 0.3 you have to enable internal connections widget or icon,
in element editor and save element, now in 0.4 devel version, internal connections is active by default.
And now enable internal connections choice is removed.
Btw, you could try latest snapshot 0.4 devel, code is stable i think, but we have to finish todo list for tagging release candidate etc in the end of year.
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