Hi,
In groovy we made a few changes on how installer media are built and what they install in-target.
If users booted the installer fine and are attempting to install, the changes described at the top of this discussion all worked fine.
However, the changes of what bootloaders are installed in-target have also changed, and may trip things up.
Do you have a reliable reproducer? We are currently looking for a way to reproduce the problem the users are experiencing. Something like “install windows version BLAH in BIOS mode, then install Ubuntu 18.04, then try to reinstall Ubuntu 20.10 instead of 18.04 using the resize option” or like replace option, or like some things are in EFI mode, etc.
We are really looking to steps on how to trigger and reproduce the issue at hand. If that Italian thread has something, it would be very useful to have the reproducer steps translated into english.