I cannot reproduce this issue with 16.04.0, 16.04.3 and bionic. When "Download updates" is checked, updates are downloaded in /target/var/cache/apt/archives and available for installation after a reboot.
I'm closing this report, don't hesitate to reopen it if it is still an issue for you.
I cannot reproduce this issue with 16.04.0, 16.04.3 and bionic. When "Download updates" is checked, updates are downloaded in /target/ var/cache/ apt/archives and available for installation after a reboot.
I'm closing this report, don't hesitate to reopen it if it is still an issue for you.