This bug was fixed in the package grub2 - 2.04-1ubuntu24
--------------- grub2 (2.04-1ubuntu24) focal; urgency=medium
* Support installing to multiple ESPs (LP: #1871821)
-- Julian Andres Klode <email address hidden> Thu, 09 Apr 2020 12:51:07 +0200
This bug was fixed in the package grub2 - 2.04-1ubuntu24
---------------
grub2 (2.04-1ubuntu24) focal; urgency=medium
* Support installing to multiple ESPs (LP: #1871821)
-- Julian Andres Klode <email address hidden> Thu, 09 Apr 2020 12:51:07 +0200