It's just as the title describes. Very strange, I cannot ever reboot without making sure I use F9 to manually select the Manjaro boot option. If I forget the boot menu comes up but it's completely frozen, only a hard shutdown get's me out.
Also my apologies if I'm not explaining this well, but here's the exact steps:
Manjaro installed alongside Windows. Manjaro is the default boot option. Assume I deleted all Linux partitions and it's a fresh install alongside Windows.
I have a 2019 HP Spectre. i7 Skylake with an Nvidia MX150. I usually choose non-free drivers, though I've tried free too. I can post the inxi later.
Get Manjaro boot menu
It's instantly frozen at the boot menu
F9 to get the bios boot option menu (where the choices would be Manjaro, Windows or EFI File)
Select Manjaro (same as what is the default boot option) -> Manjaro boot menu comes up -> it's not frozen, everything works perfectly fine, no other issues at all (well minor annoyances with hybrid graphics)