we started a game with the experimental build 0.13 and did a bit achievment hunting. Building a Roboport fast for "you are doing it right".
Lazy as I am producing both types of robots, set 2 chests and 2 insterters to a Roboport. Set the Inserters to insert, if there are less than 20 of a type.
After a while we had no robots available, the insterters didn't work.
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:Pole wire information', the left insterter inserts the construction robots, but the light is red, even the condition is met.
After a bit of testing, only the inserter doesnt work with the signal from the roboport. (Yes, roboport wire condition is set to read robot statistic)
I tested the 2 combinators and lamps, both reading the signal and do staff with it.
Work around: Use a combinator with the signal *1 and output it to the Inserter.