I installed 15.0 (Build 65.1) into an existing encrypted LVM.  The install
mostly went well, except for the problem already reported as bug 1071350

However, the "resume=" parameter of the grub2-efi boot line was also wrong. 
Not serious for me, because I don't use hibernation.  But it still looks like a
bug.

Background:  The particular computer has two distinct encrypted LVMs.  I used
one of those.  The swap volume of the LVM is "/dev/seagate2/swap".  However,
the grub configuration used "resume=/dev/seagate1/swap".  That's the swap
volume from the other encrypted LVM.

I am guessing that came from the original partitioning proposal (which I did
not use).  Everything else looked okay.  In particular, "/etc/fstab" contained
a swap entry for the correct "/dev/seagate2/swap", and did not contain any
entry for the wrong swap.  It looks as if "/etc/default/grub" was created from
the partitioning proposal, and not updated at the end of the partitioning
section of the install.

Yast logs for this install can be found as an attachment to bug 1071350