The root cause is fixed, now.
I tried to create a new install with this configuration and ubiquity wouldn't let me install: It claimed that a separate boot partition would be needed, but I know this is not the case, because calamares (lubuntu) handles this successfully.
The root cause is fixed, now.
I tried to create a new install with this configuration and ubiquity wouldn't let me install: It claimed that a separate boot partition would be needed, but I know this is not the case, because calamares (lubuntu) handles this successfully.