Combination of zip and iterators with multiple return values drops all values after first

[bigbes]

Example:

tarantool> fun.duplicate(1, 2, 3):take(3):each(print)
1       2       3
1       2       3
1       2       3
---
...
tarantool> fun.zip({1, 2, 3}, fun.duplicate(1, 2, 3)):take(3):each(print)
1       1
2       1
3       1
---
...

Expected:

tarantool> fun.duplicate(1, 2, 3):take(3):each(print)
1       2       3
1       2       3
1       2       3
---
...
tarantool> fun.zip({1, 2, 3}, fun.duplicate(1, 2, 3)):take(3):each(print)
1       1       2       3
2       1       2       3
3       1       2       3
---
...

Probably error is in zip_gen_r in line:

local state_x, r = gen_x(param_x, state[i])

where other values are dropped