After doing package updates install, the link to return basically points to the Software Updates' "Package Updates" tab and it used to return there before.
But since a while, it returns to an empty page, not to the "Package updates" tab.
Ubuntu 20.04.6 (irrelevant I guess)
When you mouse over that "Return to package list" link, what is the URL shown in your browser's status bar?
That's odd, as I have never received a notification when this ticket was initially created.
I think I found the cause, and fixed it here : https://github.com/webmin/webmin/commit/1d0d25efac650f1e017f64d6df43de8a1c99c521
Btw, same thing happens, when I click on the "Refresh available packages" on the "Package Updates" tab, after the refresh, the "return" link goes to an emtpy tab. The link is:
/package-updates/index.cgi?mode=updates&search=&tab=install
Ok looks like that bug was fixed here : https://github.com/webmin/webmin/commit/04523fdb866bbba9b6226c97387981e1b24fb6fa
This will be in the next webmin release..