behaviour of 'system' version inconsistent/bugged

[z0w13]

Describe the bug
Some plugins do not function with system version, one example being the rust plugin

To Reproduce
rtx exec rust@system -- which rustc

Expected behavior

Expected output:

~$ rtx exec rust@system -- which rustc
/usr/bin/rustc

actual output:

~$ rtx exec rust@system -- which rustc
/home/zowie/.local/share/rtx/installs/rust/1.67.1/bin/rustc

rtx doctor output

rtx version:
  1.22.4 linux-x64 (built 2023-03-06)

shell:
  /usr/bin/fish
  fish, version 3.6.0

rtx environment variables:
  RTX_SHELL=fish

config:
  Files: ~/.tool-versions, ~/.config/rtx/config.toml
  Installed Plugins: deno, elixir, golang, java, maven, nodejs, php, python, ruby, rust, shellcheck, yarn

settings:
  {"experimental": "false", "missing_runtime_behavior": "prompt", "always_keep_download": "false", "legacy_version_file": "true", "plugin_autoupdat
e_last_check_duration": "10080", "verbose": "false", "asdf_compat": "false", "jobs": "1", "disable_default_shorthands": "false", "log_level": "INFO
", "raw": "false"}

toolset:
  yarn@1.22.10, php@8.2.3, golang@1.16.2, java@openjdk-10.0.2, maven@3.6.3, deno@1.10.1, rust@1.67.1, shellcheck@0.9.0, ruby@3.1.0, python@3.11.2

Additional context
Using Arch Linux with the system rust package

[jdx]

yeah I can repro