install/54787: "install" flag does not set

[guest01%uo.com@localhost]

>Number:         54787
>Category:       install
>Synopsis:       "install" flag does not set
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    install-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Dec 19 15:05:00 +0000 2019
>Originator:     guest01
>Release:        NetBSD 9.0 RC1
>Organization:
>Environment:
amd64
>Description:
I install NetBSD 9.0 RC1 from NetBSD-9.0_RC1-amd64-install.img.gz downloaded today.
I install NetBSD 9.0 RC1 on computer with NetBSD 8.0 and I want to keep partitions on the disk.
When I change install flag of a partition it does not change on the list of partitions.
>How-To-Repeat:
Boot computer with install image.

When you do installation procedure select "Edit the MBR partition table" change install flag and select Partition OK.
Status of partion (on the list of partitions) does not change.

Enter partition second time, set install flag and select Partion OK.
Status of partion is changed now
>Fix: