Lokallu

@Torabi Sorry, but I think they are different problem. Items should be deposited by hopper #2 when signal goes off, no matter there is a push (by hopper #1) or a pull (by itself). In my case, there even haven't a pull. Instead, if I set the repeater to 1-tick, hopper #2 work as expected (input signal remains the same pattern).

@Torabi Hopper #1 is working as expected, the problem is on Hopper #2. Unlike hopper #1, which can pull and push at the same tick, hopper #2 can either receive or deposit one item at a time. Note that both hoppers are fed with 2-clock signal but having different reaction.

I extracted the part with problem from my whole setup.