Cannot open /dev/fd/63: no such file or directory

Using structure `command1 <(command2)` results in the error from title. Tried workarounds like `ln -s /proc/self/fd /dev/fd` or installing `udev` but this didn't help - _/proc/self/fd_ contains only _0, 1, 2 and 3_ files. Any suggestions if it's fixable locally?

No source file or test is named. Start by reproducing `command1 <(command2)` in iSH and comparing `/proc/self/fd` with `/dev/fd`; trace the shell and file-descriptor handling involved. Done means establishing whether a local workaround exists or identifying a scoped implementation change, with a regression test if the behavior is fixed.

Written by the indexing model from the issue text.