Comment # 25 on bug 1226122 from Mario Guzman

I am pretty sure now the missing suse-module-tools-scriptlets is the problem. I
went ahead and continued installing with the following:
* Set boot manager to "NOT MANAGED" so no boot manager.
* In software selection I located and added/checked
suse-module-tools-scriptlets, this resulted in MANY dependencies added,
including several YAST modules.

Installation finished and booted normally!

Although the machines are different they are both Macs, first one I was
installing on has NVME SSD internal, the other normal internal SSD and HD. I
don't think that makes any difference here although I will install this way on
the first machine in a few hours just to make sure. So I think TW/OS has a
problem when not installing boot manager (and no EFI partition specified?).
This was not a problem in 2022 and prior.