Strange behaviour from Xenial installer

[O. Sinclair]

Dear all,

I am close to giving up. For whatever reason the upgrade route via 15.04 
and so on always crashes. Decided to fresh 16.04.1 install.

I have separate / and /home partitions, both ext4. Here comes the 
problem: the installer insist that my /home is ext2 and whatever I set 
it to wants to format it. No thank you...

Where as the partitionmanager has no problem whatsoever to see that it 
is ext4...

Anyone have any ideasof what I can do to get the installer to understand 
that my ext4 is ext4 and should not be formatted??

Kind regards,
Sinclair