Hello,

There is some strange behavior with $RANDOM, because you don't
seed after forking.

For a testcase, here you go
--
Define a function echoing the value of $RANDOM
```
get_random() {
        echo "${RANDOM}"
}
```
Run it trough a pipe
```
get_random | cat
```
If you run it multiple times, the output is the same.
--

There is the patch linked, which fixes it.

Have a nice day!
-- 
Valérian Rousset