This bug was fixed in the package grub2-signed - 1.46.5
--------------- grub2-signed (1.46.5) vivid; urgency=medium
* Rebuild against grub2 2.02~beta2-22ubuntu1.5 (LP: #1476882, LP: #1459872, LP: 1459871, LP: #1517586, LP:#1508893, LP: #1521612, LP: #1274320).
-- dann frazier <email address hidden> Wed, 16 Dec 2015 14:18:28 -0700
This bug was fixed in the package grub2-signed - 1.46.5
---------------
grub2-signed (1.46.5) vivid; urgency=medium
* Rebuild against grub2 2.02~beta2- 22ubuntu1. 5 (LP: #1476882, LP: #1459872,
LP: 1459871, LP: #1517586, LP:#1508893, LP: #1521612, LP: #1274320).
-- dann frazier <email address hidden> Wed, 16 Dec 2015 14:18:28 -0700