This bug was fixed in the package calamares - 3.2.4-0ubuntu2
--------------- calamares (3.2.4-0ubuntu2) disco; urgency=medium
* Restore button updates in partition page (LP: #1823569).
-- Dan Simmons <email address hidden> Mon, 08 Apr 2019 07:18:07 -0400
This bug was fixed in the package calamares - 3.2.4-0ubuntu2
---------------
calamares (3.2.4-0ubuntu2) disco; urgency=medium
* Restore button updates in partition page (LP: #1823569).
-- Dan Simmons <email address hidden> Mon, 08 Apr 2019 07:18:07 -0400