-e: this way you can't install the Mono and IL2CPP support for Linux with the MacOS editor at the same time
--it works when installing via the hub

-repro:
--download the Editor installer and the two targetsupport installers for Mono and IL2CPP Linux
--install the editor
--install the Linux Mono support via the targetinstaller
--check the PlaybackEngines\LinuxStandaloneSupport for it's contents
--install Linux IL2CPP support via the targetinstaller
--check the PlaybackEngines\LinuxStandaloneSupport for it's contents (including subfolders)
--NOTICE that several of the previously installed items are now missing