There is no hell - only expectations not met. This is not a bug.
There is a lot of tools which can write the Manjaro ISO to a stick but ISO unpackers cannot. The tools listed below usually works.
- dd (Linux)
- ventoy (Windows, Manjaro)
- Rufus (Windows)
- popsicle (Manjaro)
- mintstick (Manjaro)
- imagewriter (Manjaro)
- isousb (Manjaro)
- Balena Etcher (Windows, Manjaro) - not recommended but usually works
If you boot your system with Legacy boot enabled the ISO - Legacy boot will most likely be the default and Manjaro will boot in Legacy mode and your trouble begin.
Always install using the same method for all systems.
Disable Legacy boot in the firmware - it is often enabled and will boot Manjaro in BIOS mode.
You cannot - BIOS based grub cannot show EFI based system
You have two options - I suggest you use the first as this is the least trouble
- Use your firmware boot override
- Reinstall Manjaro in EFI mode