Comment 4 for bug 1891275

Kubuntu 18.04.5 QA-test install on
hp dx6120mt (mini-tower, pentium 4, 3gb, winfast clone of nvidia 7600gt)

-- following is from iso.qa.ubuntu.com notes (edited)

error has appeared (looks like https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1891275)
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Error restoring installed application.
An error occurred while restoring previously-installed applications. The installation will continue, but you may have to manually reinstall some applications after the computer reboot.
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I erased & re-created the single partition on this system, so didn't expect this error. I don't expect any restoration of packages to occur, but even if it did - my install was from the same image with no packages added (unless downloaded & installed during install itself, which could have been done again).

The installer then exited??? no reboot message at all??? !!!
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I later worked out entering LIVE mode occurs b/c of error.

In the Kubuntu installer, if you delete partition, then create the same EXT4 partition using the same space, it'll default to NO-FORMAT and thus re-use the prior partition. This is why the message occurred.

However the packages present were only ones using a Kubuntu install process as per testcase, nothing extra, so this error I don't believe should occur. Even if installer download & installed extra packages, why can't it download & install them again this time, I've not done any no-internet QA-installs last two days.