[BUG] process substitution breaks when nested or traverses a function

[Francisco de Zuviría Allende <franciscodezuviria@xxxxxxxxx>]

#!/bin/bash
foo() { cat <(cat "$@"); }; foo <(echo bar);
bar

#!/bin/zsh
foo() { cat <(cat "$@"); }; foo <(echo bar);
cat: /proc/self/fd/11: No such file or directory

Best of regards